it has nothing to do with being autistic, however he was fucking zooted on ketamine during ceremony. I doubt that he’s ever sober as of lately.
Drug usage can fuck up people good or bring out what’s hiding real deep in them, see Kanye’s story with nitrous. And that’s precisely why he’s dangerous, he is powerful and deranged at the same time.
It’s been production-ready for a while, Valve is known to use it for long time. Official release is more for API and ABI stability so you don’t have to change anything to upgrade.