I’m not claiming that Blizzard is innocent, or that they don’t have a “toxic gamer” culture. I doubt any of us have the facts to make any claim either way with certainty.
I do find it unlikely that it’s a rampant or institutional culture in Blizzard. Blizzard is foremost a large corporation, and these large corporations have vast HR departments that are usually keenly sensitive to these types of issues.
Going in for your corporate day job as a female employee at Blizzard is likely much different than a woman going down to the local game store to try and play a game of warhammer with the local neckbeards.
Expect some of it to be internal company communication, formal and informal (personal emails, memos, etc.) Under discovery, the person/company being sued can be required to turn over anything.
Imagine giving even a shred of “benefit of the doubt” to a company that has treated its playerbase as poorly as blizzard. It’s borderline Stockholm Syndrome