This part is too broad.
Hierarchical values are just that. Not wholesale. We call that nonsense, e.g. I believe pigs can fly, therefore the sky is red. They are making an ontological error.
But this seems wrong because people of different creeds and value systems do stuff together all the time. Or am I misunderstanding your point?
By design. Activists and left-wingers in general enjoy losing and being underdogs and infighting constantly
It's per the usual for extremist ideologies, chock full of hypocrisy and nonsense.
Note that, I have no problem with conservative or liberal value systems...