True but WoT relays are the worst offenders because they function like a social credit score.

The idea of a global firehose feed is impossible. Nostr is barely used and already its impossible to find any note worth reading if you look at the global firehose feed. Every relay that doesn't make use of some form of heuristic based automatic filter will get DDOSed at some point by petabytes of spam. WOT is just one tactic to sort it. The prevailing alternative will probably be paid relays, but even the tiniest payment is a hard sell when people are used to the internet being free. So much of the internet is just a massive struggle against the inevitable end where everything is monetized. Lightning micropayments make this possible.