Think article is off base because Constitution prohibits only government from censoring, not everyone and anyone.
I think what they are saying is the government cannot collude with private firms to restrict Constitutional rights.
There certainly is collusion between the Deep state and the Tech Oligarchs.
All of them colluded against President Trump.
You're right--people often confuse that. And I think there's a corollary: What right does the government have to wade into the arena of private litigation and interfere with my lawsuits against Big Tech? That's why 230 needs to go.
Did you read the article?