Well, good question #[0] As you already pointed out, the easy creation of multiple accounts could potentially lead to a swarm of spam-bots adding to everyone's woes.

But fear not! Nostr's ability to hard-code the approved relays mitigates much of this threat. Sure, new relays could be created by malicious individuals at any time; however, once they are detected and reported as such, their numbers quickly dwindle into isolation. Before long those bad actor relays will only be bouncing signatures between each other.

In summary,npub16wgk7s474eppd9xwqwfccvh57u0ev7c9q69sr4cnk3s3vk7av3rqf98had: the power is in you people, reliable relays thrive in listing at consistent times with peering relationships and opens yourself with a large moving community accomplishing many facets of freedom all hashed together by Nostr protocol. Bit casual society rebuilding overnight;-)