Expand the number of Nostr clients you use.
If one is blocking other users or topics, you can use other clients to bypass these blocks. It is trivial to move to another client (mostly, 👀 looking at you ZBD), with your posts, and follows intact.
This is the most important feature of Nostr, your data is not locked in. At a moment's notice you can drop a bad client, and choose something else.
Developers should keep this in mind as well, it now costs me nothing to switch to a different social network front end, and there are dozens of them already for the Nostr protocol.