It’s a recurring fediverse issue - Mastodon has it too. Basically, there are levels of blocking at various points in the hierarchy and you block or get blocked to your tolerance zone. This means that certain norms get squashed(and there are some reasonable concerns about who this helps), but it also tends to self-moderate to the conversations people want to engage with. The “invasive free-speech” instances of Mastodon tend to end up isolated, but it can also be hard to get situated and find an instance and follows you’re happy with.

Something I’m looking forward to with the forum model being added to the mix is a greater ability to browse for organized discussions.