StyleX won CSS-in-JS because AI agents can read it

We began choosing CSS tools depending on what a robot could read. In late August 2026, both Linear and Cursor said they were moving to Meta's StyleX, with Cursor ripping out Tailwind and Linear migrating from styled-components. ## Wait, why would anyone leave Tailwind? Tailwind became popular because it was effortless to type, simple to read, and...