It's so obvious mate, the Velocity is Not Progress section is the worst.

Frequent bullet lists. Bolded key phrases. Varying sentence length for emphasis. “Not X, Y” phrasing structure. Pervasive second-person perspective.

I mean it’s possible somebody just writes like that, but I wouldn’t bet money on it.

The cadence and sentence structure is very obvious; GPT-based LLMs somehow just tend to be very haughty by default. There's the very slogan-esque 'X? Verb-in-past-tense. Y? Another-verb-in-past-tense' sort of sentences that're a dead give-away that something is written by an LLM. Also weird similes and constructions that make grammatical and even contextual sense, but don't really exist in English.