His point is that narcissistic, lazy, incompetent people are easy to replace with AI. In other words, most executives and grant writers. Why are you framing it like you disagree? He is correct.
Also a point about style for "someone who excels at technical writing": an LLM could help you come up with stronger, more evocative wording than very, very, and very. I try to use words like "very" zero times in a row, because there's always a better word that actually adds something more insightful to the description than a generic "very" or three. Using "very" three times in a row is like eating a whole box of unflavored starch packing peanuts.
For your second paragraph: I'm not looking for a job on here and I'm not writing technically. I'm posting on an Internet forum and using repetition to emphasize a point. Sort of like changing the voice I use for the forum or audience. That sort of thing is very, very common.