Anyone read the prior post he references? This one is supposed to be acknowledging that he was too aggressive in attacking the Lisp community in his last post ("Mea Culpa").
Sounds like the author is having trouble with the humility thing:
"I'm really humble, so now everyone else has to be as well"
"I spent those decades debugging the Frankenstein. In the OS crash debugger. In hex. Because wasn’t it oh so clever and efficient to build a radically new kind of database with extreme reliability requirements as a highly multithreaded kernel extension to the OS?"
Those languages merely aspire to true awfulness - for truly mind warping horror you need to see some in-house designed languages that I have seen that use XML as their starting point.
Sounds like the author is having trouble with the humility thing:
just one of the many faces of narcissism