I guess if I am nit-picking, it's very hard for a statistician to claim anything as having a zero possibility... of course a statement like that helps no one. These are my actual thoughts:
non-zero possibility
It is technically possible that Musk's gesture was not a Nazi salute but rather something that looks similar. Fun fact, this is something that happened with S. Korea's Megalian hand gesture issue (for example see this case: https://www.bbc.com/news/articles/cx2621gzvkdo), where ppl found the gesture in a lot of unexpected places. However, the Megalian gesture is a pretty common hand movement, whereas the Nazi salute... I mean I guess it could happen due to a really bad out-of-context dance choreography?? But that clearly wasn't Musk's case
"But I am just wondering if everyone else sees this that way with no room for it being a result of autism and definitely that."
... I mean maybe?? I have weird Autistic intrusive thoughts sometimes but even then this is a bit... Honestly though, I don't know if I should put any respect to someone who willingly know what a Nazi salute is, and then choose to do it in front of one of the most important political events in the world, twice in a row nontheless. I find it hard to believe such an act to be a faux pass and non-intentional. Heck even if it is completely unintentional, this would be ground for job termination and put on a blacklist for life for most job positions I know
"Is this where we are? I feel more scared to be in America now."
Yeah I know... I seriously wonder why I am still in the US as well.