Nobody said anything about treating ethnic cleansing as a legitimate goal or a respect-worthy political platform except you. That is a huge red herring and it's disingenuous to associate that with an discomfort with banning speech and ideas, particularly in a country where it explicitly lists that freedom in the first amendment of the constitution.
Look, one of the people you replied to was talking about branding and all that. The second you go on a crusade and talking about banning people with ideas, the stronger their brand becomes.
I haven't thought about Neo Nazis in 20+ years, that is until everyone started talking about banning their sites. It's not the people who tolerate their speech and ignore it that gives these people's ideas weight, it's the people who demand a moral crusade by silencing them that do.
It's true irony that in the effort to silence distasteful ideas, people are giving those ideas much more relevance than if they had done what we always do. Allow people to say stupid things, ignore them, then wave as they scurry off under the rock of which they came.