I don’t see your counter argument
It appears jb’s method would work - dumb relay, smart client. That’s what nostr is.
If you’re proposing a highly auditable smart relay, then I’m out. That’s btc cash or alt mentality. Plebs will run the network. It needs to scale. We aren’t going to run some new AWS-tech in our garages that you only barely heard about unless you can provide links and show evidence