Qoto.org says it has zero tolerance for hatred, but also "does not currently block any Fediverse servers".
I messaged Qoto admin to ask whether they would block servers that incited genocide. Admin replied Qoto would not block such servers.
I asked about the danger of radicalisation, and they said "(people) aren't going to read some random thing on the internet and turn bad. It just doesn't happen."
Have blocked qoto.org, would encourage others to do same.