They control what I say. That’s pretty big.

My, but you certainly have an outsized estimation of your own importance, don’t you?

No one is obligated to host what you have to say. You want to get your message out, find somewhere that will or host it yourself.

Like everyone else.

They control what I say

No they don’t. They just control whether you get to say it in that particular space.

Editors at publishing companies don’t “control” what I say just because they can choose whether or not to publish my book.

a minor personal inconvenience is not censorship