tl;dr: Riffing on John Gruber's posts about creeping ads on Apple surfaces, the author argues that in UI design there's no stable middle ground: once you allow one setting, exception, or ad, "infinity" inevitably follows (see Chrome's right-click menu or iOS screenshot options bloating over time). Because digital interfaces are infinitely extensible and each incremental addition seems harmless in isolation, complexity accretes unless someone is empowered to arbitrarily say no.