Nostr and Simplex are the solution to censorship.

ISPs cannot ban Nostr, there are currently more than 617 relays, they would have to ban all their ips, so what? setting up a relay is very simple, they can even operate behind Tor.

Nostr has no central server to attack, no rigid architecture to dismantle.

The same goes for Simplex, you can set up your own Simplex server in 5 minutes, it is not feasible to censor all Simplex servers, and in the same way, they can also operate behind Tor.

Simplex, like Nostr also does not have a central server to attack and censor.

If you are using Telegram, think about migrating your groups to Simplex, what is happening in Spain can happen in your country at any time.