Many years ago, he said he was bipolar, and I believe that. I think he is a sociopath, and he swings with the way the wind is blowing, but I'm not sure.
I've watched him play people on Twitter. For instance, he needed to sell some Tesla shares, but if he sold, the share price would drop. So he manipulated his reading public to ask them if he must sell to do this or that.
Of course, they said yes, and so he had their permission, and the share price did not drop. He is a master con man.
I don't know of any connection between the amygdala and psychopathy, but that doesn't mean there isn't one.