As I mentioned earlier, metaphors are pretty useless when you begin applying specifics.
"Would you jump off a cliff if your friends did it?" I trust my friends would jump off a cliff for a good reason, maybe they were running from something, so yes.
It was absolutely the wrong move to let Kayne back on the platform, and Elon is an asshole, for this, and basically everything else he has ever done.
But epistemologically, we don't have good reason to suspect Elon is ascribes to Nazi ideology. He could let Kayne back on for many other reasons; maybe he gets off on the attention (likely), maybe he just likes kanye (likely), maybe he's a free speech absolutist (likely - unless it's critical of him specifically (see jet tracker and parody accounts)).
I'm kinda in agreement with you. The right has a seemingly limitless supply of ammo, but I don't see that as a case for not caring if someone gives them more.
All it takes are bad slogans to entrench their beliefs. "All cops are bastards", "math is racist", "defund the police", and "all white people are racist" make them think the left are insane.
More than anything, this is a war of optics, the left are more educated, more tolerant, more generous, and if we are going to deconvert anyone from the right, we need to show them we aren't morons.
Reflexively jumping to Godwin's law is the fastest way to lose.