Yup. The author is juuuuust missed in identifying the issue. The alt-right doesn’t take gaming, or gamers, seriously. But they do see angry young men as recruitment targets, and understand that a lot of gamers are much, much bigger losers than most of us imagine, and that they have a lot of pent up anger at not being taken seriously.
The basement dwelling CHUDs don’t realize that Bannon’s brigade is laughing at them whenever they’re not in the room. They’re just that desperate for any kind of attention and validation, even if it’s painfully disingenuous.