This clip from bsky put it next to (I think) a clip from american history X, and he even pulls the same face
E: Dutch onion news site Historians: Hitler did the Musk greeting. lol. (The only 'news' in .nl which I so far have seen it call a nazi salute openly btw, so not going well here).
Musk heard about the 'gamer words' and because so many called him a fake game he went out and did nazi salute, he feels bullied really.
E: reality is even dumber, in what is prob an attempt to distract from the nazi salutes he admits to cheating, using the 'everybody does it' defense. Of course he also thinks he did nothing wrong, in a way that would make Sartres skin crawl. Poor Grimes, face bitten again.