You elided a sentence right before: "Punching Nazis is a minor control mechanism: it silences the danger without amplifying its speech."
...which legitimizes the use of violence against "Nazi's" for whatever value you assign to that. Your quoted fragment just disclaims the effectiveness, while the article still clearly supports the idea.
I got the complete opposite from the article. The very next sentence is:
> Historically, there has been exactly one solution for Nazis. It did not come cheap.
I read that as “punching Nazis isn’t enough on its own, you must kill them until they can no longer act effectively against you, then outlaw their ideology.”
...which legitimizes the use of violence against "Nazi's" for whatever value you assign to that. Your quoted fragment just disclaims the effectiveness, while the article still clearly supports the idea.