I have a hard time seeing how anyone could have a hard time seeing that gaming culture has some major problems.
Go onto any competitive online game, it's practically guaranteed that you'll hear abusive language thrown about within an hour of play. This increases in intensity & frequency if you're not a white male.
Gamergate.
Many of the most popular gaming personalities publicly express horrendous views.
An industry that preys on addictive personality flaws
For goodness sake, this is a culture that decided "Social Justice Warrior" should be considered a slur & not a badge of honor.
And this even manifests in smaller ways. Like just look at any thread based on a Game of the Year list that deviates from the norm. The response is inevitably complaints & comments about how the list is "wrong" for not including the games that they personally have deemed worthy. You rarely hear the more positive & constructive response of "I've never heard of this game, but if someone likes it so much, maybe I should check it out." Same thing with comments on reviews - they're dominated by people telling the reviewer that they're wrong.
And I can't help but think that this is almost inevitable based on the kinds of games that people consume - aggressive, competitive, narcissistic fantasies that frequently feature hyper-violence & sexual content. And by that, I'm not saying that everyone playing these kinds of games is a bad person or even a majority, but rather that it's naïve to think that you can constantly feed this kind of negativity into a culture and it won't have some sort of effect.