Facebook vs. ad blockers becomes an arms race with no obvious winner

uBlock Origin is giving up on blocking Facebook ads, and the thread explored what comes next. The discussion ranged from 'just block all Facebook domains entirely' to speculation that LLM-powered visual ad detection running in the browser rendering engine could eventually mask ads at the pixel level before they ever reach the user. The consensus was that Facebook's server-side ad injection is now sophisticated enough to defeat filter-list approaches.

The pattern here is that platform-level ad obfuscation has outpaced the tool-list model that uBlock Origin relies on. Facebook can randomize class names, inline styles, and markup structure faster than humans can write filter rules. The only countermeasure that scales is something that understands visual semantics, not DOM structure.

The LLM-as-ad-detector idea is speculative but not absurd. Apple already has a stake in this through Intelligent Tracking Prevention, and a browser that masks ads visually rather than structurally would sidestep the entire filter-list war.