You say "don't just randomly choose"
People will naturally choose what the authorities market the hardest, even worse than random choice
And you're expecting them to do better than random choice without a system to help with it. You're wrong
People will naturally gravitate to a small number of apps based on what other people are using and if those apps aren't standardized to report on each other's behavior, they'll barely notice when those apps start sabotaging the network
If more nodes are suddenly becoming what would be tags 3 and 5, but there's no tagging system to automatically stop relying on those nodes, 𝙤𝙧 𝙖𝙩 𝙡𝙚𝙖𝙨𝙩 𝙩𝙤 𝙝𝙚𝙡𝙥 𝙩𝙝𝙚 𝙪𝙨𝙚𝙧 𝙢𝙖𝙣𝙖𝙜𝙚 𝙩𝙝𝙖𝙩, then people won't even notice someone's posts being filtered until it's been months since they heard from that person.
This is like how on the current version of nostr, there's no P2P data integrity verification, so people don't even notice someone's posts being filtered until it's been a long time since they heard from that person.
Network nodes aren't just people