This is the result of the last decade or so where SAAS has become very lucrative and barrier to entry is almost nil with some many tools to quickly build something. AI is just more fuel on that existing fire. Everyone and their mothers are building a "SAAS" these days. Interesting, now I see all these gurus either selling courses on starting SAAS or selling "boilerplates".

AI is great but this is a side effect of it. It's the new Bitcoin/Blockchain gold rush (is that fad over yet). Everyone wants a piece of it and it will continue to bring out the hustlers to make quick money.

Like you said, not all are useless and there is obviously a market right now. So people are cashing in until it lasts.