I think it's easy for native speakers to say. But as English is not my mother tongue, I find it safer to run it through a checker and nowadays, LLMs. So maybe no need to be so harsh about it
I understand that motive. On the other hand, LLM smell makes the text untrustworthy. I have detected it as well, and I immediately started to wonder about whether I am reading a reasonable expert analysis or just an AI hallucination. I still don't know.
I recommend prompting the LLM to mostly fix glaring grammatical and stylistic mistakes, not to rewrite the entire thing into a LinkedIn post style text.
I recommend prompting the LLM to mostly fix glaring grammatical and stylistic mistakes, not to rewrite the entire thing into a LinkedIn post style text.