I think part of the problem is the Politics_Too stream... aka P2.
Many of the lefties went (or just are) there.
So instead of this place being a "place to meet and discuss (diverse) (political) ideas in a constructive manner", what we have is basically separate political echo chambers.
The fact that the there are an overwhelming amount of right wingers here and some pretty consistently resort to personal insults probably contributes to driving the lefties away to P2.
If all the P2 people were consistently here instead of there, it might be more balanced.... or it might just be a more intense war zone idk. 😝