I will also add that I think in the long run, as we try to figure out how to differentiate between humans and machines, the only real reliably solution I see is to focus on elevating the individual. Having people with long histories validate their reality by living and documenting it.
I don't upvote something that I'd be ashamed for someone to see I upvote. I might make an exception for pornographic content, but even with that, if it's pseudononymous in that it's not attached to my personal public life, I don't mind if someone can trace through and see what a specific account I use for those purposes has liked and disliked.
I'm concerned that this would require a continuous supply of water at a flow rate that might not be realistic.