It is clearly not, though. It's arguably evocative of one. There is an actual form to the thing, it was a military gyration, and people taught it. You can even read the Wikipedia page: https://en.wikipedia.org/wiki/Nazi_salute It is static at the end, being held with palm down and arm stretched forward. It does not begin at the heart, as Musk performed, nor swing sideways.

Obviously you don't care about this minutiae, but it's important if you want to hang your argument on "literally a Nazi salute".

What you and I both agree on is that this was intended to evoke the idea. Where we differ is how you want to interpret it. You, I guess, think it means signaling a desire to repeat the holocaust, or something maybe a little less horrifying.

I think it's pretty clear he's wanting to create exactly the argument we're having. To wit, this was a troll, and you fell for it, and now all us lefties look like Ivermectin snorting loons because real people OBVIOUSLY know that Musk isn't a nazi.