I don't think this is true. If we could somehow compile a list of all the people 4chan has attacked over the years I'd bet we'd see equal opportunity trolling.

What was that incident a while back, where the "security expert" offered a reward for breaking into his site? 4chan took up the offer, succeeded, and trolled the guy relentlessly. Death threats, photoshops, you name it. And he was a _male_ in a male-dominated field.

The fact is the Internet just isn't a nice place a lot of the time.