Sometimes those judgement calls have allowed moderation that is at the very least poorly defined in the rules. I posted one comment complaining about a local protest about the current Palestine-Israel conflict that trashed my university's library and shuttered it for the next few months. I got a delete-ban over that for a "CHUD Opinion", which is very much not in the rules. And that is far from the first time that I've run into unwritten rules that feel like they're putting a thumb on the scales.

Sources like The Guardian, Reuters, Telegraph, CNN, BBC are sometimes allowed and sometimes removed on rule 1.

The latter case is usually evident while lurking and finding a deep long comment thread. Sometimes one user there has deleted messages and there's another's rule 3 content comments left. Apparently these cases seem to usually be mutual rule 3 but it looks like they're treated differently.