If we're talking about just slapping on tailwind+component-library(e.g. shadcn-ui, material), then that's just one step-above using no-code solutions. Which, yes, that works well. But if someone didn't need customized logic, then it was always possible to just hop on fiverr or use some very simple template-based tools to accomplish this.
If we're talking more advanced logic, understanding aesthetics, etc. Then I'd say it's much worse than other coding areas like backend, because they work on a visual and ux level beyond just code which is just text manipulation (and what llms excel at). In other words, I think the results are still very shallow beyond first impressions.