I think watching the video of just him in isolation leaves room for interpretation because people think of Nazi salutes from movies, etc. plus I think a lot of people don't want to believe that Musk would do this and want to give him the benefit of the doubt. However, when you see him doing it synchronized side by side with H-man and modern neo-Nazis and it looks like he literally practiced the exact movement with them, I think it removes any opportunity for benefit of the doubt.

Edit: here's the video I'm referring to: https://x.com/esjesjesj/status/1881716580876497257