There’s a second possibility that exists separately from (but alongside)… it’s the possibility that the writer has a shortage of intellect. It’s the equivalent of throwing the kitchen sink contents because there’s nothing of substance available. It’s the response of someone who can’t come up with something better.
If they’re doing it with you, they are doing it with others much closer, who will really be suffering the consequences. More broadly, it points to a society that resorts to abuse rather than intellect. It’s a much bigger problem than systemic belittlement.