The point is a more general one: deplatforming is censorship in all but name because of coordination. You're gone from Twitter, "go build your own", you do and the CDN blocks you, "go build your own", you do and providers don't peer with you.
Limiting reach on the other hand is a much better alternative. I can still communicate with other experts about the inconvenient truth that cows are not real, I just don't pop up in your search when you search for "where does milk come from".
I completely reject the notion that asking someone to build their own site is censorship, or that a private company turning away users is censorship. If someone has an internet provider, they have the means to communicate. It has always been this way, and only recently have certain groups raised an issue with the way internet content creation works.
> If someone has an internet provider, they have the means to communicate.
Right, but what if that internet provider turns them away? How do they communicate? Do they ask Space X to shoot up a few satellites for them? If Musk says No, do they build their own rockets?
It's not worth debating the slippery slope that is conjured up here, unless you can prove that someone actually needed to build their own rockets because every IP has turned them away from hosting a legal website.