I agree but I don't think the suggestion was to block ideologies. Rather, change the online ecosystem to stop driving people toward rage. How to do it is another question.

blocking wasn't the suggestion. It was the identification of the problem. It's a complex and sophisticated topic.

Mass shootings that start with people being radicalized by some kind of online patterns and systems is certainly a problem worth trying to fundamentally tackle somehow.

I've got no fixes so that's why I mentioned it.