People treat Facebook, Google, etc. etc. etc. as if they themselves are "The Internet" when they are publishers. "You" are not publishing content on YouTube, YouTube is publishing your content. Just because they do almost nothing to curate what they publish, doesn't mean the little they do is some civil rights violation. We're learning with the Russia+Facebook thing that there is a fundamental problem with third party corporations publishing and promoting anybody's content automatically.
Nobody claims the New York Times violates free speech when they won't put some radical wonk's opinion on the front page.
If you want to publish your content with your own hardware on the Internet, you can. The tools aren't very good to do it, but you can. When the problem becomes network providers censoring your views, then come back to me.
When your definition of "censorship" becomes advertisers refusing to pay you for your whacky extremist views, your view of freedom has become distorted from the liberty to expression to the freedom from criticism.
YouTube, Facebook, etc. do not owe you publication rights. They are not public spaces.
The threat to freedom isn't non-public spaces exercising their rights, it's the nearly complete lack of actual public space online for anyone that isn't wealthy or a hacker.