That's what the essay is doing. But in my more than 10 years (not 20) of using Lisp I have seen nothing to support the hypothesis, let alone to diagnose a psychiatric condition to a group of people.

Then there is this gem "If you read many posts discussing Lisp (including one in comp.lang.lisp called Common Lisp Sucks)" ... " The problems are soluble (Qi is a proof of that for God's sake), but when you're down everything seems insoluble. Lisp is doomed and we're all going to hell."

Lisp is doomed because nobody likes his pet project or appreciates his insults. This essay is just one big insult, I'd prefer people stop disseminating it.