Even though I feel you, and I’ve been the same type of person as the one you describe, cool with all but “in” with none, there is still some value to those old “fiat” friendships.

These are the people that anchor you back to the real world. They are small reminders of how much work there is still to do.

That said, some of those friends need to go. Just keep the best or most entertaining to fulfill that anchoring function and you good.