No, they're completely right. Destructive, hateful opinions are not "just different opinions", they are actively destroying and bastardizing the discussions and making people feel unwelcome. They are not to be tolerated unless you want all normal people to leave and only the assholes to stay, just like what is happening with Twitter.
Fuck nazis and their sympathizers.
It perfectly illustrates the issues with bias in training sets. This will revolutionize humanity.