surely they would know they are (edit: seen as) the bad guys?

This is a popular view only on left-wing social media. The vast majority of people just see them as wealthy individuals, without thinking of them as particularly bad. If I didn’t visit Lemmy, I wouldn’t even know how many people dislike them. Everywhere else, I mostly see people looking up to them. Criticism does exist, of course, but it’s usually focused on specific traits - like Elon’s Twitter addiction - rather than condemning them as a whole.

To answer your question, Elon Musk plays a lot of Diablo IV and is actually quite good at it. He claims to be in the global top 20, though that’s debatable and hard to verify. However, he is ranked in the top 20 on the leaderboard at helltides.com.