It's not an authoritarian talking point, the fact is that we can pick a platform in part based on how that platform deals with abhorrent content.

Historically when platforms go with the "zero censorship" approach, abhorrent content starts showing up and since it never gets removed people just remove themselves from the platform, skewing the ratio towards abhorrent content. Before too long it's just mostly just the people who post abhorrent content.

And bear in mind, most normal people don't get censored or banned on traditional social media platforms, we can discuss pretty much everything we want to in the terms we want to without getting banned. So even the concept of a censorship resistant platform is primarily marketed towards people who are abhorrent and lack self-restraint.