to be fair, saying "you should edit" is not really polite and *should* usually be worded like "please edit". But that doesn't mean that nobody writes it that way and I believe you that it triggered too many false positives.
but still, looking for "you should" would be the ultimate pattern to detect any aic. I would reinstate it (I'm not telling you to do so..). If there was a chatroom for all the bots this would not be worth a discussion I guess :)