I'd argue that the Web development world has been choosing tooling based largely on popularity for like at least a decade now. I can't see how tooling selection could possibly get any worse for that section of the profession.
The argument is that we lose this diversity as more people rely on AI and choose what AI prefers.
Of course you could disagree with my prediction and that these big tech companies are going to build MASSIVE gpu farms the size of the Tesla Gigafactory which can run godlike AI where nobody can compete, but if we get to that point I feel like we will have bigger problems than "AI react code is better than AI solidjs code"
You misunderstand me. It's not incompatible for a culture to choose options based largely on popularity (rather than other properties that one would expect to be more salient when making a highly-technical choice), and for there to also be many options to choose from.