That's not what the paradox of tolerance says, nor is it relevant. Popper gave two explicit standards for working out who is intolerant:

- they shun debate ("begin by denouncing all argument", "forbid their followers to listen to rational argument")

- they use violence instead ("answer arguments by the use of their fists or pistols")

I, for one, prefer having peaceful Nazis to the other sort, and to - as Popper puts it - "counter them by rational argument and keep them in check by public opinion". Unless 4chan officials or the Nazis on 4chan were meeting both standards then I fail to see a connection.

Were 4chan or the 4chan Nazis doing so?