I spent a good part of 2 years reporting on ISIS internet and how the group uses social media — in 2019 it's mind-boggling to me how well the coordinated cross-platform effort to remove them from the internet worked and how there hasn't been a similar one for white supremacists.
White supremacists (and their various fellow-travelers) are a very amorphous group, and hard to differentiate from not-supremacist but otherwise bigoted groups. They aren't at open war with anyone (despite various despicable acts) and consequently both the problem space and degree of perceived urgency are vastly different from those around containing ISIS.
ISIS also has governments lining up to kill them, which puts a crimp in their youtubing style.
Generalistic and moderated instance. All opinions are welcome, but hate speeches are prohibited. Users who don't respect rules will be silenced or suspended, depending on the violation severity.