It’s not just the self-censorship; back when Parler was a thing, I could quite easily “Not Sign Up For Parler”.
And this ISP reneging on its contracts to provide “Internet access” to their users isn’t the same as Twitter banning some racists or Parler banning most liberals who join it - the latter are protected by Section 230, and by the fact that they’re giving msot users free services in return for advertising.
But the RWNJs are whining about Twitter being kicked off Amazon, iPhone, and Android were cheering on President Trump when he told TikTok they were banned, and when he banned AliPay, QQ, and a whole bunch of other critical Chinese apps.