Does that mean we can't use terms such as "bullshit", "bullshitter", "BS" when they come up in discussions about Trump?
Because, IMO, that means we cannot seriously discuss Trump.
If your post is about moderation policy then it is more appropriately made on the Biscuit Board
But when discussing Trump or any other politician it is perhaps best to stick to facts and your views about those facts. So it is OK to say you disagree with Trump but not to say that he is an idiot, or a bullshitter, or a liar, or a child molester, or whatever opinion you may have.
You should not assume that your opinions are facts. They are merely opinions. The key is to be able to discuss a third party without being rude about them nor, by implication, being rude towards fellow Lemons who support Trump.