I do believe that he changed. He was always a narcissistic sociopath, but he was also invested in advancing humanity.

Watch the video I posted. I used to think that, but I now think that it was always just a shtick he was doing for self-aggrandizement. You’ll notice that he totally abandoned it, with prejudice, as soon as he could become more self-aggrandized by being a super-MAGA guy than he could be being a super-climate guy.