A plurality of Americans voted for him. It wasn't even EC shenanigans this time. It wasn't a huge margin, no, but more Americans who voted wanted him than any other candidate.
Elon Musk, who had already turned X into a cesspool of hate and an overt tool to get President Trump elected, is now formally part of the Trump administration, meaning the platform is literally owned by a member of the Trump White House.
Sadly, most Americans don't care about what happens to other people.