I agree with that last quote.
But what I'm noticing is a reducing of the original saying to mean any place with a nazi is a nazi bar, and therefore contaminated. Taking back online and IRL communities from nazis involves sharing space and occasionally having a dialogue.
If someone has a close relationship with a nazi, to the point where they think they can change their mind, it's their duty to try. Otherwise the nazi is only going to hang out with other nazis and become more of a shit head.
In the end I think we all agree there should be fewer nazis, but maybe we disagree on how to do that.