Many users here have a background as a moderator for a Stack Exchange site. We are a Stack Exchange site. That is the reason for bias right now. We need to expand and encourage more generic moderation theory questions that are applicable to users regardless of what they moderate.
We need users that have different backgrounds. SE is very open with their moderation and Meta sites. SE is also very big. Smaller sites with different moderation policies will provide a broader range of input. Uses from different platforms also user different terminology (reputation vs karma, upvotes vs likes).
I have advocated for specificspecific questions related to how platforms work. But, that can't be exclusive to one platform (SE, in this case). We need that broader range of input and moderators from those other platforms. To do that, we may need to approach moderators on other platforms and see if they'd be willing to contribute here.