I guess I'm going to be the one that plays devil's advocate as there is no context here other than a still image, but is it possible he wasn't intentionally doing a Nazi salute and has just been caught in an incredibly awkward pose?
The fucker paid for Pennsylvania votes last election. Literally paid for them.
He grew up in Apartheid South Africa and calls his African American workers 'Plantation' and none of them can move up the ladder in any of his companies.
Wouldn't a Nazi that thought Musk is also a Nazi be saying that it is a Nazi salute?
I don't think devils advocates or people that see life as shades of grey rather than black and white are default Nazi's, but I understand that the US is an emotionally turbulent place right now.
May I ask, if someone were to make a gesture indistinguishable from a Nazi salute, what would be necessary to convince you it was, in fact, a Nazi salute?