This is a brain dead take because it's just guilt by association. Having diplomatic relations with countries around the world doesn't mean that you endorse or support their government. A country that's ruled by a shitty ideology like Fascism or Marxism is something to be weary of, but these countries do in fact exist and they do play a role in global politics and economics. For example, the UAE and Israel normalizing relations doesn't mean that they support each other, but they recognize each other's influence and understand that diplomacy and cooperation is more beneficial and productive than shunning each other.

I mean we tried to sanction, shun, and ignore authoritarian countries like Cuba and North Korea for decades… How has that worked out for us? My point is that we can't cut relations with every country we don't like. There are situations where that should be the case and there are definitely arguments for us to be more cautious when dealing with these types of regimes, but we can't cut ourselves off from the vast majority of the world (which is authoritarian) nor can we force countries to adopt our ways (we tried with Iraq and Afghanistan, it didn't work).