If you check out events regarding GamerGate, this makes a lot of sense on a level that is actually worrying.
There is a subtype of gamers which is okay with being shitty humans, either because of the lack of outsid experience about the world, or the necessary intelligence to comprehend it, or maybe both.
While the responsibility of the media is also massive, I'd suggest not to sweep this problem under the rug. GamerGate was disgusting for nearly everyone being involved and highlighted some serious issues that actually lead to the culture war, of which the alt-right is a manifestation.