not sure that's how it works, i don't know the guy well enough to say he's a nazi but i believe the accusations are primarily due to his connections with the far right german political party, AfD, who are alleged to be a neo-nazi movement, due to their radical ideologies, extreme rhetoric and historical revisionism. aswell as this, musk's endorsement of anti-semitic posts on X have caused widespread condemnation. but i would love to hear other people's views on this matter!