Its unfortunate that those groups exist. But there are many who genuinely want to discover and share knowledge and know how. Research is a slog and it’s hard to quantify how some seemingly esoteric research could benefit humanity.

My comment maybe came off as a criticism for academics but I was speaking from experience with my own struggle disentangling my ego from academia. I still wanted to think of myself as a physicist and it handicapped my career progress and made me unhappy. Letting go of that was key.

This is very true. The only way I coped with it was by basically just cutting off any contact I had with people in my former field, with the exception of a couple of friends. Or at least, I like to think that I cut off contact. A more realistic assessment is that I simply ceased to exist to most of those people as soon as I left the field.

Caring about something like this is all about ego, though. What good is this network if you're stuck?

It’s definitely partially academia that does this. When you are a grad student you are paid so poorly and worked so hard it is difficult to build a substantial identity outside of being an academic. Academia is good at marketing itself as a noble cause that imbues very high status if you can ever “make it” so quiting is giving up on that lofty dream. Where in industry it is definitely “not cool” if you build your identity around your job. That creates a helpful firewall that pushes people to develop something outside their work.