Your experience/experiments running things through cleaners sounds like a future post waiting to happen ;D My current hypothesis is that it might make it seem more like AI, as far as I can tell there have been some people that are getting called out for AI usage when all they seem to be doing is getting AI to translate and/or grammatically edit their posts (the latter case sometimes even if English is their first language).
I know you're going to worry and stress about it til you process this particular part of the planning phase but I"m still going to tell yo u not to anyway :)
RE: DAILY WHINGING in the studio - When ORIGINAL content is flagged as AI. A NEW problem