You'd be surprised how many are sad losers that have everything handed to them. The abusive ones are typically like that, but these ones? That are primped and preened into some weird display? They're usually brought up never truly wanting for much, but that results in this paradox of wanting more. All people search for meaning. Many (and historically most) found meaning through religion. Some though material gain, self-improvement or even family. Others, through fighting injustice. But what happens to that latter group when the vast majority of injustice has already been conquered? You make shit up.

There are so many trust fund kids that join SocJus movements, and it's because they have a lack of meaning in life, and SocJus gives them that. Everyone has this drive to some extent. But the allure of fighting a supposed Evil™ to make the world A Better Place™? For the spiritually lacking, it's a serious draw.

The people this dumbass preys on to spread her ideology are definitely the types you mentioned. But she herself? She stinks of having a free ride in life, which almost definitely pushed her to the culture of Victimhood as a currency and decisions to manufacture victimhood as she needed it.

So no, I don't believe that she's the way she is from various possibilities that legitimises victimhood. She's almost definitely a piece of shit all on her own.