I would love to understand this.

Just a few years ago badly behaved scrapers were rare enough not to be worth worrying about. Today they are such a menace that hooking any dynamic site up to a pay-to-scale hosting platform like Vercel or Cloud Run can trigger terrifying bills on very short notice.

"It's for AI" feels like lazy reasoning for me... but what IS it for?

One guess: maybe there's enough of a market now for buying freshly updated scrapes of the web that it's worth a bunch of chancers running a scrape. But who are the customers?

For whatever reason, legislation is lax right now if you claim the purpose of scraping is for AI training even for copyrighted material.

May be everyone is trying to take advantage of the situation before law eventually catches up.