A good summary of many of the issues I see, both online and elsewhere:
There is an odd new take on progressiveness as needing to turn all the tables, so that not being discriminated against based on some characteristic is now privilege, rather than perhaps fair treatment which we all should be able to experience.
Instead, some people are seen as having too much, others to little, while nobody appears to have the fair amount of rights. When you add to this the multiple dimensions on which privilege or its lack can now be defined (not just the traditional -isms but thin preference etc.), finding where any one individual might stand in the hierarchy, overall, becomes complicated and situation-dependent, but that is not how the two-dimensional tribalism online works.
Rather it's a generalised ethical and moral weighing of an individual's worth, on the basis of mostly immutable characteristics attributed to groups or some sub-groups within those. This erases most agency, causes despondency, and turns 'allyship' into form of penitence with odd sado-masochistic characteristics.
I should note that my dislike of the privilege framework is not the same as not seeing the value of being aware of the way various demographic groups, when viewed as a whole, do benefit or hurt from past historical events and current biases and bigotries. I am for the latter understanding and its applications, and for introspection which helps all of us understand better how the world might feel for others.
The other aspect of this new framework by the left which bothers me is its focus on semantics, on individual repentance, on social stigmatising and mob justice etc., rather than on creating real policies and allocating real resources which would lift up oppressed groups and make a material difference in the lives of the poorest and most marginalised.
It's also true that some minority of the most vocal activists I see online come across as uncaring, callous, and often sadistic (seemingly enjoying cruelty aimed at those who cannot defend themselves against it). This is something I naively did not expect from the social justice side.