Funny, the Verge did not complain as much when Parler was taken down in concert in the matter of 2 days. So much for defending the "open internet".
Large internet "infrastructure" businesses are in partnership with government officials, so I have no reason to believe that the Parler takedown was anything but political censorship. Maybe not technically, but definitely in spirit and effect - and after all, that's all that really matters.
On this topic, the point is, that something is banned by someone with the appropriate means. It doesn't really matter whether it is government or private enterprise, because they meet in the backroom and coordinate their steps anyway. In the end, it doesn't matter who's initiative it was, who did the execution, but the purpose and result itself.