I'm not at all a gamer, but I have been following this Anita Sarkeesian/Feminist Frequency saga.

Anita Sarkeesian does not appear to be an honest person. From her kickstarter, to different videos where she contradicts herself.

Her videos seem to be either badly researched or manipulated to serve her rhetoric.

She does seem to be pretty savvy at manipulation of the media. She mainly uses it to quiet any opposing viewpoint.

As for the death/rape threats I bet it isn't any more than the average person in the public eye gets for expressing their opinion. I bet Bill O'Reily gets a ton of death threats after every episode.