Creativity comes from constraints. Writing code hasn't been the hard part since the 90s. Deciding which things make for a good game and are worth spending your limited time on is where fun comes from.
AI makes it easy to spit things out, but it doesn't make things fun or good at all.
Otherwise it's an insurmountable barrier.
I think it's a bit like writing a novel.
Everyone's got a novel in them, but you absolutely need to know how to write to get it out. Unless you can dictate it but then... you could also hire a developer.
Those without the resources to hire a developer, without the years of education and practise to code at any level of proficiency, can now realize some form of their ideas.
I just logically can't see how the increased accessibility and output won't increase the amount of interesting games, even if 99% are slop (so is fan fiction, let them enjoy it).
Obligatory: https://xkcd.com/1414/
e.g. the programming concepts needed for Pong wouldn't take you more than a dozen hours or so. See how good you are at art or music after the same amount of time!