That's the million dollar question. User verification, account age, karma systems, basically the least intrusive possible way of determining you are a human. S.Korea has a pretty robust system of tying people to online accounts. Is there a way to do that without handing the reins to a possibly corrupt government? Blockchain technology tied to anonymous accounts that have to jump through hoops to be verified on a given site? Something else?
If I truly do not wish not to interact with and/or be scraped by AI, then it sure looks like I might have to sacrifice privacy to do so. I feel I would be willing to do it selectively. Visit some websites that require draconian human-verification, and other more 'free' websites that do not, and know which is which.