One of the most advanced programmers out there - I can trace back my grass-root aspirations to starting my own Operating System due to pouring through his code and seeing the intricate art involved in thousands of lines of code including his own compiler. Rest in Peace
He’s schizophrenic, or something like that. The TempleOS wikipedia page mentions that he suffered some kind of mental episode that left him hospitalized.
The facebook screenshot in the OP hasn’t been seen as a public facebook post, just that screenshot. Also, because Terry is/was homeless and living in his car, it’s hard to confirm.
He was some computer scientist with schizophrenia prone to racist outbursts and ridiculous vlogs that the goy club thought was funny. He was a character but it was all kind of mean spirited and tasteless