It's for similar reasons that leftists call so many disparate people Nazis or Nazi allies - by using their particular brands of pedantry, slanted even-handedness, rhetorical traps and conversation shifts to the generally uncontroversial "assault is illegal" policy they're furthering that same agenda, and whether this happens unwittingly or otherwise often gets pretty fuzzy. That there are terribly few rhetorically effective leftists around to correctly elaborate the position (I'm definitely not one of them) and call people out for spreading covert Nazi bullshit only makes the problem worse.
I dunno man, you did a pretty fucking good job elaborating it just now.
Most of these kids have been sitting around in echo chambers letting their angsty white boy farts circulate until they end up going down one of two main paths:
The Horrified Moment of Enlightenment--where they wake up and notice they're sitting in a room full of fuckboys talking about how great their shit smells and leave or possibly try to help some of their buddies get out of the nazishit smog rooms--hurray, they figured out a thing they were doing was really fucking shitty and knocked it off. Sometimes these moments are brought about by dudebro who goes around talking to racists and getting them to chill, and that is
fan-fucking-tastic but shit don't work out like that very much, so we come to...
The Dumbfuck Internet Tough Guy Turned Actual!Nazi Moment--wherein they gear up, go out with some of their shitsucking compatriots, and start talking shit while relying on societal norms to keep them from having to face some of the consequences that someone openly rallying in pursuit of nazi goals might face--of which being punched is by far more pleasant than pretty much the entire rest of the list of shit which the world has united in the past to do to nazis. Is it likely that popping them in the nose is going to be very effective at getting them to reconsider their shitty fucking thinking? Fuck no, but it might just make the next dipshit jacking off in their own corner of the nazifuckboyforums wuss out before heading out to toss slurs at innocent bystanders and whatnot.
Me, my skin is light enough that I've had cops pull me over for a busted headlight and when I explained that I didn't have my wallet because we were picking up a prescription which the lil lady in the passenger seat needed filled asap so I just grabbed the keys without even getting out of my pajama pants,
they told me to be careful and get the headlight fixed and that was the end of it. So I figure hey, if I can make use of that sort of leeway which is just arbitrarily given to me by
impolitely discouraging nazi fuckboys from harrassing some guy or gal because they happen to be a little too dark, it's all good, and hey, a night in jail plus a court date with a good lawyer at your side when you're actually standing there saying "well your honor, the guy insisted he was a nazi and I'd hate to disappoint my grandfather, sir" makes a better story later on than "I wanted to punch him but I just yelled until I got hoarse and dunno where they went when I got back from getting a soda" would, yeah?