Well, to start with, she flat out lies in her videos... misrepresenting material at times, and outright prevaricating in others... Often spouting off much the same nonsense rhetoric as Jack Thompson before her. Long story short, what she said wasn't exactly new, original, or honest... and she got torn to shreds for it, much as Thompson did.
And both of them did the exact same thing after. They played the "I'm the victim" card. Didn't work so well for Thompson... I guess it's hard to get a lot of public sympathy when you're a rich, middle-aged, white, lawyer...
When Sarkeesian gets destroyed, she screams sexism and that she's the victim of a systematic conspiracy by men against her. And- this is where she's different from Thompson- people believe her shit. Because she's a "feminist", other feminists rush to her defense. Instead of treating her the way basically everyone treats Thompson.
And on the cycle gets fed. She plays the god damn victim card like her life depends on it... because it's the only one she has and she knows it.
But all of that is secondary. A symptom of the disease. The disease itself, the cancer at the heart of feminism, is the people who defended her. Not because she was right, or because she was being wronged- after all, if they believed in that, they'd be defending Thompson as well- they defend her because she's "one of them".
I don't believe one bad apple spoils the bunch.
I do believe that if you lay down with dogs, you wake up with flees.