I had the same thought. TBH there is nothing in those individual sentences that read like AI but when you read them all together I could see it too. I dunno what it is, only way I can describe it is that it does not sound like a normal human but rather a monologue from a character trying to sound impressive with each successive sentence.
The author works at OpenAI, so it's no surprise that they've stopped noticing how grating this kind of structure is to read.