Earlier quoted context omitted.
Most of the content on any such platform is going to be the kind that was banned from mainstream platforms for whatever reason. But it's not just alt-right agitprop that gets banned. And any individual targeted group is not large enough to maintain a viable platform of their own. So either we have a public platform place with the stink, or we have none at all.
I think the complaint isn't that the content exists there, but rather that it makes up the vast majority of what is found there. If the majority of Netflix content is trash that I wouldn't want to watch, why would I continue using Netflix? I think the big issue here is that there hasn't been a need for opposing content to be published on the platform, and until there is it will remain slanted one way. This in and of…
It's not that there hasn't been a need for other stuff to be published - it's that there hasn't been a proportional need. Which is exactly what I meant: any alternatives to established platforms are going to have the preponderance of content banished from those established platforms, in direct proportion. So if the purges on e.g. YouTube mostly target right-wing extremism, but also target some other content, then that's the distribution you're going to see on alternative platforms. But what other choice do you have, if you're interested in that other content?