Opt out, we already have robots.txt for this and would work just as well as any legislation.
You will never be able to tell if bad actors are violating your ToS or the law unless they keep raw data stored for inspection.
Even if AIPrime respects your wishes and doesn't scrape your site I potentially have the ability to feed it anything I have access to. I won't claim to have the largest data library on earth but I have been data hoarding since the mid 90s and would gladly share it with a company I feel is aligned with my beliefs.
Maybe, but having a sense of community maked a big difference in keeping people engaged when communities are small and need to grow. There are certainly plenty of spaces that should be kept clean and on topic but if everything is always dry and boring you will have limited engagement and limited repeats.
When a lurker knows how to "newfags can't triforce"
Or respond to "Red Leader standing by."
Then they see positive feedback from the community they feel like they are part of the community vs an observer and tribalism is one of the strongest features/bugs of humanity.
This also helps keep discussions civil when you can realize the person you have having a disagreement with regarding "tensor wave field dynamics in corn flakes" isn't just a raging dick because they used the "specific gravity of skim milk instead of whole milk like you were."
Edit: make to makes and mile to milk