Why should curation be centralized? We do not need a "decentralized dictatorship" (what would that even be? that's antithetical) and we certainly do not need a centralized one. It seems crazy that your solutions to AI, spam, and "automated traffic" (I don't know what that is, I assume web crawlers and such) is that the police control every single transaction.

First off, we can simply let the user, or client software, choose. Why should we let centralized servers do that by default?

At scale, DNS is somewhat centralized but authorities are disconnected from internet providers and web browsers. They're the best actors to regulate this.

For mail, couldn't we come up with a mail-DNS, that authenticates senders? There could be different limits based on whether you are an individual or a company, and whether you're sending 10'000 emails or just 100.

Regardless of whether these are good solutions -- why jump to extreme ones? "TINA" is not a helpful argument, it's a slogan.