Relays are not coordinated. For every relay A that bans you because you say X, there will be a relay B that welcomes with open arms if you say X. If the recipients want to hear all the facets of discourse around X, they will subscribe to A and B. If they really hate X, they will subscribe to A but not to B. If they really love X, they will probably subscribe only to B.

Compare this with Mastodon, where your favourite server can decide to exclude other servers, so if A decides that X is toxic, you will never see X as long as you use A.