Simple: The right to free speech doesn't mean people have to listen, or guarantee access to a publisher. You can self-publish all you want.
Ability to work with companies is no longer an option if you want any message through.
If you can't post on any social media you are as good as being completely censored.
It never has been. Publishers refusing to publish speech isn’t a new phenomenon. Newspapers, radio and TV stations have been doing it since their inceptions.
What do you think an “editor” does?
> If you can't post on any social media you are as good as being completely censored.
That’s hardly true either. You can run your own websites, mailing lists, or just send stuff in the post. There are plenty of people that don’t use social media, I doubt they feel censored.
It doesn't matter to me if you're against companies censoring any of these things. Be aware that it means you're fine with authoritarianism, so long as it aligns with your politics...