I belong to several forums that are heavily moderated, some hunting/guns, some focused on other topics. I don’t have an issue since you should know the rules going in. It’s their forum and if the want to maintain a certain sense of decorum, that’s fine. Abide by their rules or leave. I don’t mind the free wheeling here. Kind of like the shift offices at the prisons I where I worked. Nothing was sacred. Had to cowboy up or leave.
There are forums I frequent where I don’t want that atmosphere. I go there for the exchange of ideas and information in a civil arena.
As was mentioned already, “their forums, their rules.” When you register with their forum you generally have a box to check acknowledging you read, understand and will abide by the rules. Kind of silly to whine about their rules after agreeing to them.