Who amongst us hasn’t mistakenly made what looks like a Nazi salute, twice, in front of a crowd whilst doing a speech, been wrongfully interpreted as an AfD supporter after having said “I support the AfD” or made posts claiming that Jews do bad things which were unfairly seen as antisemitic?
It could happen to anybody!
/s
The joke is exactly that the “argument” you’re using has been abused to such a point by American “centrists” and the even more far right types that per their definition the only possible way to be a Nazi is to have been a member of the National Socialist Party Of The German Worker during the period when it was committing the Holocaust.
You saw a lot of this shit from, for example, supporters of Zionism, and now you’re seeing an even more ridiculous version of it from far-right muppets trying to excuse Elon’s looks-like-Hitler’s repeated salute as not Nazi.
Normal people who are not arguing in bad faith will have a definition for the threshold of when a person, party or nation’s actions might be considered as Nazism which is far less restricted than “only those who were the murderers in the Holocaust qualify”.