His point is simple. Argument poster was wrong, isn't being helpful, and has a pattern of doing this.
By the by, there was no ad hominem there. Ad hominem is when you insult someone as a way to avoid what they're saying. What this person is saying has not been avoided.
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This is on topic for implementing a lisp parser, though. Not sure what your point beyond this ad hominem is.
His point is simple. Argument poster was wrong, isn't being helpful, and has a pattern of doing this.
By the by, there was no ad hominem there. Ad hominem is when you insult someone as a way to avoid what they're saying. What this person is saying has not been avoided.
Probably put the fallacies away: https://laurencetennant.com/bonds/bdksucks.html
Saying that "he just wants to tell you about the silly flavor of lisp he invented" isn't exactly constructive either, especially when it's relevant.