A useful aspect to a completely unambiguous fascist gesture is that you can use it to gauge which news media you can trust to call a Nazi a Nazi, which will obfuscate things with layers of “both-sides” and which will be regurgitating propaganda.
rnz
called it salute, lots of both sides
https://www.rnz.co.nz/news/world/539564/musk-raises-eyebrows-with-salute-gesture-at-trump-rally
nzherald
called it a salute
https://www.nzherald.co.nz/world/donald-trump-inauguration-elon-musk-performs-nazi-salute-draws-outraged-reaction/VY3GO2CPFVA2FN4OF4APXRNOBM/
stuff
only reported Musk’s rebuttal
https://www.stuff.co.nz/world-news/360555618/dirty-tricks-elon-musk-dismisses-backlash-over-his-hand-gesture-trump-rally
The people trying to dismiss it are delusional. In the clip he literally turns around and does it again. He also does it with such passion and emphasis, how can you say it’s anything else? Arguing over where he touched his chest is ridiculous. There are now a number of comparison clips online with Hitler and other Neo Nazis doing it to show how it’s practically the same.
In short, Brandon Galambos is either an idiot or a Nazi and maybe even both.