All of Nostr is about freedom of speech. Every client just imagine it's a different themed gate to enter the same mall. Because that's all these clients are just doorways. But to your comment you can talk about Trump on anyone of them.

Just learn about WoT(Web of Trust) some clients have it built in with no control over it some clients built their app w the wot & control over it & some have no wot at all. Amethyst has WoT but you can turn it off. Not being censored is when you see all the spam bots posting inbetween everyones posts constantly. Right now we have a big primal bot problem. Some jerk who owns the primal relay is spamming hundreds of thousands of npubs w one bot spamming for the pcoin lol. If you don't see these bots then your being censored.