That nazi salute how do you actually know it was ment to show off as a Nazi supporter? I mean who is telling this? Or is that your assumption based on something?
There is also his namesake, his racist father and his grandfathers past. There is a lot of background information available if you really look for it. And finally, if you look at story of "The Elon" and what Elon has been building, you could almost think that he is trying to actually live up to his namesake!
Trump's ex wife mentioned the only book he ever had in his bedside table at night was on hitler speeches. Multiple Trump aides have been caught reading the mEIN kampf. Stephen Miller is somehow the world's only nazi jew and writes trump's speeches.
To this cohort of people Elon spent a fortune on funding their campaign, even willing to commit election fraud (the 1 million giveaway case which is on going but seems open and close).
In front of that audience he did 2 nazi salutes chest to straight arm. He didnt apologise or explain it either.
What other possible explanation is there beyond "the dude saw a nazi adjacent politcal platform and spent hundreds of millions to make it succeed and then went mask off the second he knew there would be no repercussions"