I've said this before for Assigned Male, but imo SJW is a fad that's dying out. Very few people outside of Tumblr circlejerks and SJW cults take terms like "cisnormality" and "privilege" seriously, and their outright dogmatic and almost toxic demeanor is showing. People like Wu and Dobson who basically are nothing more than the embodiments of SJWism are going to be gone in a year or two when people except the extreme nuts abandon it.
I see what you mean, but I fear the contrary: because the continual pushing of what is acceptable keeps stretching the bounds of outrage further and further, yesterday's unconventional (trans) is outdistanced by today's increasingly common, (otherkin, etc.) and while you're certainly right that the more you stay on the internet, the larger the problem seems, (particularly around tumblr, DA, etc.) Wu's continued success at "marketing" herself to make "speeches" where she whines and self-pities for and hour shows that, shockingly, whether due white guilt or a combo platter of identity-politics explanations, this way of thinking is becoming increasingly tolerated.
If anything, the process seems to be speeding up. I didn't think we'd see the celebration of transgender in an adult, family man in my lifetime, and though I suspect its more due the money to be made by isolating and capturing marketable demographics, that very reason makes it frighteningly sustainable.
The thing about identity politics which makes it so damaging is the "divide and conquer" trick. Instead of getting the poor underclasses of economically oppressed peoples to mass under the common banner of penury, this protracted compartmentalization into rigid group identities DIVIDES everyone, and simultaneously sends people chasing their own tails, essentially, when sociopaths like Wu realize there's a buck to be made in selling fear and loathing to millenials. It's funny; Wu, a Gen X-er who failed at social identification, by all accounts, in her own age group and generation, has reinvented herself as essentially a one-woman FOX News for the SJWs.
She reports on the outrage-du-jour, is quick to brand the infidels who don't march in lock-step to the ideology, and deals in a very binary sort of morality, where the good is always the enemy of the perfect.
Not only is it unrealistic, I suspect it stems from Wu's unstable mental state in great part. Wu will never be satisfied, because she's fighting a battle with herself, her parents, and her legit identity as a priviliged white man. Turning that anger outward has garnered her money and fans, but the ephemeral nature of this stuff will guarantee that in a year, two at most, her spotlight will have considerably dimmed.
Seeing as how Brianna wu, epic warrior for good, is clearly filling some deep need in her psyche for acceptance and positive self-impression, (The Batman comparisons, the constant and tone-deaf self-congratulation) when this role fades she will become a ball of anxiety, more than she already is.
Acceptance, I think, is what she's after. The reason she brands those who mock her game "bros" is because, in a very real sense to her, she's fighting against those college frat boys who made fun of her when she was a confused pre-op.
You can't beat the ghosts of the past, they have to be let go, if you're to have any peace at all. But Wu's whole identity is revenge against an unaccepting world, and as such, its inherently negative.
It would almost be sad if she wasn't so arrogant, irritating, narcissistic, dishonest, and effective at crucifying her enemies.