Lemmy was made by and for Marxist-Leninists but they're very openly non-sectarian, meaning any leftist who doesn't instigate in-fighting is welcome.
It's really just blahaj that's this way, I don't know what ada has been doing but this is gonna keep happening until she gets it together.
Ahh I see what you mean.
Honestly it comes down more to the fact that nobody else stepped up to mod before the drama.
A holdover from reddit culture is having a tight knit group of mods for each community, when it could very well be more open than that.
For example the /c/Trans comm here and /c/traa on hexbear.
/c/Trans here did open recruitment a while ago and pretty much anybody that was interested got added to the team and subsequently the matrix chat.
Hexbears /c/traa will add pretty much anyone that's been active in the community and is trans in order to have moderation available around the clock. As a result any bad apples are culled asap, and the community is much better for it.
I do agree that there could be something that isn't so top heavy though, but I'm not personally sure what such a system would look like.