I don’t think tailwind or its templates are the issue (and believe me, I am the furthest thing from a tailwind advocate).

Just shipping a tailwind template is lazy and trite. But LLMs are made to optimize for the lazy and trite. They can only choose the lowest-common denominator.

LLMs don’t really know how to give designs personality. Most of the time I see attempts to improve the situation that basically just boil down to vibe-coded slop that’s prettier. I’m sure better designs exist, but the ones that do exist are almost certainly about the person who drove the LLM, not the LLM itself.