I have been participating in online forums for 26 years now. In the beginning there wasn't a need for much moderation maybe because time was more precious and getting online required some effort. When Slab said that this site was about the community and not making money it made me stop and think. It certainly seems that the internet went downhill about the time it became a commercially viable platform. How that works I could only speculate on. What is certain is it has only gotten truly toxic in the last 5 or so years. That toxicity is reflected in politics. politics destroy forums today.
It really comes down to civility. The things that are not allowed here are the same things that were once considered inappropriate for polite society. Manners are about knowing what is appropriate and what is not under various circumstances. If you want to talk about fishing this is the place to do it.