Here's an example of Elon Musk agreeing with a man who repeated an antisemitic belief that the Jewish community is inviting immigrants to further racism against the white population (also alluding to the Great Replacement theory - and if you want to claim that it isn't explicitly being stated, implicit nods are inherent to most political statements)[0].
Elon Musk also endorsed and spoke at an AfD event[1], which comprises members that are 7.5X more likely to participate in Holocaust denialism: believing that the Holocaust is Allied propaganda[2]. Multiple former leaders (including a co-founder) of the AfD describe the party as extremely far-right and authoritarian[3][4]. Elected members of the AfD have been found on a Facebook group sharing memes about baking Anne Frank in a pizza oven and insulting interracial couples[5]. Maybe you could claim that these are past events, but the frequency of these issues are alarming. Even so, we have a more recent example: in 2024, a leading member of the AfD was fined for using a slogan that was used by the Nazi military[6].
At best, you could call Elon Musk an absolutely bone-headed moron who has no idea who he chooses to support or where he chooses to attend. With Occam's razor it seems like he has embraced a lot of hateful ideology.