It's possible, but not for content flow IMO, not yet at least (maybe they will if lots or users leave during/after the blackout).

Farming karma and selling accounts it's a quite widespread practice on reddit.

That is, new accounts are created, repost bots are attached to them to farm karma, and when they deem it's enough, they sell/use the accounts for propaganda or advertising, that way they appear more credible to all those not paying enough attention - that is the vast majority of those consuming content.

the Eldorado in term of monetization for Reddit is to sell reddit as a playfield for AI’s

I completely agree, no other platform comes even close to the amount of user generated content reddit has, in text form on top of it, that's perfect for training AIs.

I’ve overwritten all my comments before deleting them

What did you use? I was thinking about doing the same.