I'm with you on the intent, though I think Nostr's approach may be self defeating. You have a house with no front door, anyone can just walk right in. There is no "investment" required to reroll your presence on Nostr, so things like muting/ignoring/banning/whatever are just a pointless whack-a-mole.

Your users will end up forced to wall themselves behind a bunch of generic filters or whitelists provided by clients, or only use scrubbed relays. Isn't that counter to users not being forced to only read what is allowed? What legitimate user wants to constantly see re-runs of 2girls1cup in response to every comment? It's disingenuous to say "users can choose to see everything if they want" when everything beyond the filter is midgets fisting each other's assholes.

Paid relays are proposing that the front door becomes money. I'm not convinced that really solves anything other than alienate normal users.

And ultimately the problem with places like Lemmy isn't being able to see everything, it's being able to interact with everything without censorship. Nostr's response to its spam problem, where a moderator is hypothetically expected to vet every single post, is way more draconian.