And yet they have gained footholds in countless decentralized groups and continue to spread?
Because a) zoomer generation is way more left leaning b) important hobbies for culture are corporately owned - power of RPG over overall culture is... well irrelevant in large scope of things
Bonus is: it's naturally libertarian hobby - your table is always yours. There are always methods to spread non-woke RPGs even if population gonna turn left so hard it will be non-commercial activity.
Plot twist is: most of RPG producers, and most of OSR mayor producer, and most of NERDS are left-leaning. Way more than overall population. There is way less nerds among conservatists than among liberals.
That's not hobby problem, that's society problem.
There is not enough widely-understood right-wing nerds to grew as big as leftists. Simple enough.