This doesn’t seem obviously true. There’s a bell curve of how knowledgeable people are with tech and somehow people I spend time with end up in the tail end. There’s a bell curve of how much they like board games and I end up spending a lot of time with people at the tail end as well. In general, the people you spend time with are not selected by a process which is even close to random.

"In general, the people you spend time with are not selected by a process which is even close to random"

That very much depends on where you are born & brought up, and how willing you are to leave all that behind.