Somewhat tangential to the questions of whether this essay was AI-written and whether any human actually writes like a LLM, I think linguists now widely agree that LLMs picked a lot of traits from the formal register of African varieties of English when OpenAI (and later other American companies) hired Kenyans and Nigerians (possibly a lot of English teachers among them!) to do RLHF
Somewhat tangential to the questions of whether this essay was AI-written and whether any human actually writes like a LLM, I think linguists now widely agree that LLMs picked a lot of traits from the formal register of African varieties of English when OpenAI (and later other American companies) hired Kenyans and Nigerians (possibly a lot of English teachers among them!) to do RLHF