Spam will flood a lot of places for sure. But there is a solution! We were just talking about it in a lively and informative thread on lichess. [1] A social graph, in which people are confirmed as humans from the outside world as well as from the virtual world, connecting hierarchies of pseudonymous accounts together.

The social graph of reputation systems, has a necessary constraint, it has to be retained in the blockchain so as to be incorruptible by every human power. As soon as a node can be planted by a malicious actor, as part of the social graph, the whole of it becomes invalidated.

Mr Craig Wright calls this "The Metanet", George Gilder calls this "The cryptocosm", other people call it "Web3", Balaji Srinivasan calls it "The network State". I call it, "The internet of one million governments".

[1] https://lichess.org/forum/lichess-feedback/long-playing-play...

Edit: added Balaji Srinivasan