That's a problem with scrapers, not with AI. I'm not sure why there are way more AI scraper bots now than there were search scraper bots back when that was the new thing. However that's still an issue of scapers and rate limiting and nothing to do with wanting or not wanting AI to read your free and open content.

This whole discussion is about limiting bots and other unwanted agents, not about AI specifically (AI was just an obvious example)