Yeah the behavior of instance blocking is an inevitability for these systems. This creates the conditions for those nearer to or already at the extremes to self

Yeah the behavior of instance blocking is an inevitability for these systems. This creates the conditions for those nearer to or already at the extremes to self-select out of the mainstream by choosing to join already radicalized networks. I think this instance-level blocking helps contain overall radicalization tho, versus the more pernicious radicalizing via mainstream social networks. Basically I don't see them as equivalent in effect, which was the point I was making.