The weird thing is that I haven't seen all that many examples of reality-rejecting social activism, despite your claim that there is "much" of it. Are you sure you haven't just failed to understand what the people are actually saying?
It's not sad because "frighteningly representative" is purely subjective. I don't even know where to start disagreeing with you because you've failed to say anything about how.
If you believe in the right of self-determination, what's the fucking difference how someone self-identifies?