Musk really loves to hate especially those people and companies with employees who supported Tesla the most when they were still struggling a lot and were close to go bankrupt. Nowadays he's pretty much supporting especially those who always shat on electric cars and stuff like that. I guess that's his way to get money from everyone and as long as he's always getting what he wants he will never stop to be such a narcissist.
Too bad this asshole attitude is something so many are attracted to. It's also the easiest kind of character to build an own cult following.