This seems like an overcorrection. There is a vast difference between someone copy and pasting from an LLM and using one to correct their English or improve their writing ability.

Rules like this seem to me more like fomenting witch hunting of "AI comments" than it is about improving the dialogue. Just about any place I've seen take this hardline stance doesn't improve, it just becomes filled with more people who want to want to pat each other on the back about how bad AI is.

Just my two cents. I don't filter my comments through any AI, but I am empathetic for people who might have great use of them to connect them to the conversation.