Yeah, and clearly bright as hell if he could string together something as complicated as TempleOS. Imagine what he could have done if he had been able to direct it towards something more globally useful. RIP dude, hope there's a reward for determination in the afterlife.
I hope so. I'm a little worried it'll only ever be appreciated in niche communities that really understand the depth of what he did. Maybe I'm not giving enough credit to fringe artists, but I don't know that it'd be easy to express how impressive it is to build a functional OS as a single person that could do as much as his did, with the hardware it was based on.