Spam is typically two forms. Annoyance and a scam to extract money for idiots or the unfortunate. I’m less concerned about those in general.

I am far more concerned about targeted and malicious coordinated attacks being performed. General spam isn’t dangerous - however the fake hostage phone calls with your daughters voice are. And governments and or malicious actors can 100% no question abuse decentralised moderation. And even people who don’t like you - why, because computers can report faster than humans. Moore makes that law..

I haven’t read your latest proposal in full, so I’m commenting in general around approaches and trade offs.

It sounds like instead, you’re after centralised moderation or curation. Both are asking someone else to make decisions on what you see and don’t see. Again, I don’t see that requiring any protocol level changes… you can do that all on a layer 2 moderation layer above. The important part is it’s opt in and transparent.

My reply earlier to another of your replies states how this is easily possible.