As the father of a son with high functioning autism who is now in his 20s, I don't find it surprising that Musk posts things that are socially awkward and seemingly "deranged." Autistic people generally say things that they feel are correct in the moment without having the benefit of filtering themselves over how they think others will react. It's simply not the way their minds function like the rest of us.
So while I know Musk posts things sometimes that are extreme, I take them with a huge grain of salt because I know how my son says things sometimes without any intent of malice that are taken quite badly due to his lack of ability to empathize with others as most people are able to do. He doesn't say these awkward things to be mean or to try to cause hurt feelings. His mind is too innocent to think that way/ He just doesn't realize anyone will be offended by what he says (talking about my son).
I'm not saying Musk doesn't post things that are out of line; just that I don't believe he does so out of hatred, because hatred is a somewhat foreign idea to an autistic mind.
Just my .02 on that.