I think a collection of basic utility classes (w-100, m-2-t) and layout components (<Flex dir="row" gap="2">, etc.) are equivalent ideas, and they are nice for

I think a collection of basic utility classes (w-100, m-2-t) and layout components (<Flex dir="row" gap="2">, etc.) are equivalent ideas, and they are nice for quickly setting up a one-off layout that's very readable. But Tailwind turns this practical idea into a religion that locks projects in to using it and harms readability. Human readability is a very useful proxy for good modularity and separation of concerns (and modularity increases scalability and reusability). Since LLMs take the whole thing in at once, they are terrible at module boundaries. (They also suck at theory of mind, and their comments reflect it, but I digress.)