There is no "entire corpus of StackOverflow-esque fix suggestions" about anything which is newer than a few years. I'm using cutting edge Android frameworks all the time. Yet, LLMs fix problems even when Google/Kagi has zero answers, which happens more often than not. We are way over this requirement.

I especially found that there is no difference between languages based on that. All generated code's architecture is terrible, if you don't actively manually maintain them all the time. If you don't have a few 10s of thousands of finely architected code already in your codebase, from which they can understand how it should be really done. And the reason, I think, is quite simple: the average code on the internet - regardless of market penetration of the given language - is simply bad.