It's no true scotsman if you just resolve their indirection: no true scotsman would care about syntax, because a true scotsman is someone who doesn't care for such a thing - otherwise, they're people who GP finds to be of low value, and thus their opinion doesn't count, as they're no true scotsman, not true programmers.

It's why I called it an outright textbook example: it's an appeal to purity, where purity is determined in a circular way - the very definition of the no true scotsman fallacy, as far as I could find and understand it.