YouTube designed a platform to keep children watching. A jury said so. Now the company wants a law written for 1996 dial-up chatrooms to let it walk.

YouTube filed its notice of appeal Monday in Los Angeles County Superior Court, seeking to overturn the landmark March verdict that found the Google-owned platform and Meta negligent in designing addictive systems that harmed a 20-year-old woman identified in court documents as KGM — Kaley — who became addicted to social media as a child. The appeal came less than a week after Meta filed its own, and after trial judge Carolyn B. Kuhl denied both companies’ post-trial motions for a new trial in early June. The jury awarded $3 million in compensatory damages and recommended $3 million more in punitive damages, with the final decision on the punitive award left to the trial judge.

The appellate question both companies are driving toward is whether the platforms can invoke Section 230 of the 1996 Communications Decency Act — a statute enacted two years before Google existed, fourteen years before Instagram launched — as a comprehensive shield against liability for how those platforms were engineered.

This is the pattern across the industry’s litigation posture. TikTok and Snap Inc., originally named as co-defendants, settled for undisclosed sums before trial. YouTube and Meta fought to verdict and have now appealed on the same doctrinal ground: Section 230 immunity. The appeals are coordinated enough in timing that the industry is building precedent, not just defending individual verdicts.

The statute’s text, at 47 U.S.C. § 230(c)(1), reads: “No provider or user of an interactive computer service shall be treated as the publisher or speaker of any information provided by another information content provider.” Congress built that language so platforms could moderate user-generated content — removing spam, deleting threats, curating forums — without inheriting publisher liability for everything users posted. It was a content-moderation shield. A good one.

What YouTube and Meta are asking the appellate court to do is extend that shield to cover the platforms’ own design choices — the engineering decisions that governed how users interacted with the product. The distinction matters, and it is doctrinally load-bearing in this case. An infinite scroll is not a piece of user content. An autoplay function that queues the next video without a user’s deliberate choice is not information provided by another person. A recommendation algorithm that learns a child’s vulnerability patterns and serves content accordingly is not a publishing decision about third-party material. Those are product-design decisions — choices the platforms made about the architecture of their own systems. The KGM trial produced evidence that YouTube’s specific design features — not the videos users uploaded, but the mechanisms that governed how long users watched and how often they returned — were causally linked to her addiction and resulting harm.

YouTube’s core trial argument was, remarkably, that its platform is not a social media platform. The jury rejected that characterization, which is worth stating plainly because it reveals the scope of what the companies are attempting: if a platform’s design features are treated as part of its “publishing function,” then Section 230 immunizes every design choice a platform makes. Autoplay — immune. Recommendation algorithms tuned to maximize engagement among minors — immune. Notification systems engineered to pull children back to the screen — immune. The statute would stop being a content-moderation shield and become a comprehensive liability shield for extraction architecture.

This is the doctrinal fault line the appellate court sits on, and it extends far beyond one case. The social media addiction multidistrict litigation now numbers thousands of similar suits pending across the federal and state court systems. The KGM verdict was the first to go to trial on a design-defect theory. If the appellate court affirms — if it holds that Section 230 does not cover a platform’s own engineering choices — those cases proceed. If it reverses on Section 230 grounds, the entire wave of design-liability litigation collapses.

The Court’s recent treatment of Section 230 has signaled that the statute has boundaries — and that those boundaries remain unsettled. In Gonzalez v. Google LLC, 598 U.S. 617 (2023), the Court took up the question of whether Section 230 immunizes algorithmic content recommendations, heard oral argument, and then dismissed the writ as improvidently granted — leaving the central question open without a ruling. In NetChoice v. Paxton and NetChoice v. Moody, the Court treated platform design choices — moderation algorithms, content-sorting mechanisms — as potentially distinct from user-generated content for First Amendment purposes. The doctrinal trajectory is toward recognizing that what a platform builds is different from what its users post, but the Court has yet to say so definitively. The KGM appeal asks whether that trajectory continues — and it may be the vehicle that forces the definitive ruling the Court avoided in Gonzalez.

Mark Lanier, Kaley’s lead attorney, said in a statement following Meta’s appeal that the legal team expects the appellate court to “continue the careful application of the law to this case, affirming the verdict of the trial court.” José Castañeda, a spokesperson for Google, said YouTube was planning its appeal and described the filings as “standard motions for this case to move forward.”

They are standard — and that is the point. The coordinated appeals from the two companies are the industry’s playbook when its design-for-addiction model faces judicial review: invoke a statute Congress wrote for a different problem, hope appellate courts blur the line between hosting content and engineering extractive systems, and buy time while the architecture runs. The engineering that produced Kaley’s addiction is still operating on every platform, on every child with a screen, while the companies litigate whether a 1996 law protects the machinery from judicial scrutiny.

Section 230 is doing work it was never designed to do — and the work it is doing is shielding the architecture of childhood extraction from the accountability a jury already found warranted.