

This is the issue. It’s not that this is “LLM writing style”. It is just formal writing. The thing is most people write like third graders, so these stick out with good reason, just not that ‘it is AI’.
In general there aren’t good ways to tell TBH. Literally giving it the command to ‘not write like an AI’ would make half of these disappear.
Having the AI edit a text for you would add some of these. Not because it is AI, but because that’s proper writing.
Just to add to this: It was a term used by white people for slaves, it is directly linked to slavery. This is what makes it so offensive, particularly in the context of the US, if your ancestors weren’t slaves, or even from Africa.
A rough explicit version would be to call someone ‘slave’ to their face. The US context adds insult to injury because descendants of former masters and slaves are living together, so not only is it a personal insult, but a cultural one. Like saying ‘you should still be slaves’. White people know this, nobody can’t claim ignorance, this makes it even MORE offensive, because the speaker doesn’t have the benefit of the doubt.