The "geek" hobbies are low hanging fruit because there is no meaningful gatekeeping mechanism.

I don't know that they are.

Just compare to sports. Sports have been formally integrated, forever, and when they did it opened a floodgate. Major sports haven't been remotely white, compared to the population, since IDK at least the 80s.

Geek hobbies were never formally segregated, but they remained at higher levels of whiteness than sports. Despite gargantuan efforts, Hollywood faggots haven't had much success at all forcing geek stuff on blacks and Mexicans. All they've been able to do is cast blacks and try to force that on whites. There has been a lot of natural penetration of Asians and browns into geekdom. But they were willing to be there when the diverse characters were still green and purple. Or maybe willing to let anime, which is increasingly important itself, represent them.