Yeah, I think we have a lot of sleeper geniuses out there
I'm a pretty smart dude. I'm no big deal on HackerNews or in Silicon Valley, but I look easily 10x as smart as most of the normal people I come across in the real world. And I regularly come across people so much smarter than me, they have to explain things to me the same way I talk to a toddler
I'll bet a lot of geniuses are congregating in cool orgs like those where they can make a real difference in the world.