[californical]

Two things tell me this isn’t the case:

(1) it’s not that I can’t understand their output, it’s just written in a way that is very homogenous and same-y, with very boring cliches and phrases that don’t quite match their context

(2) a pretty strong sign of intelligence is being able to explain complex things in simple terms

[rkoten]

It's very much number 2 in my experience with it. Predominantly whenever a really advanced word or phrase is used it can be substituted for a much simpler one without losing useful context. And it seems to really prefer to use them a lot.