Parent should if they can! But there's also a big difference in intentionality between meeting someone on the quad / outside your room and starting a meetup with friends (or new friends!) scattered across town.
Would also suggest looking for social clubs. I've found the "general social hangouts + minimal focus on a shared interest" are great for people time.
Avoids the monomaniacal over-focus of a single-interest activity, while still providing a bridge with random strangers ("You like thing? I like thing!").
The Bay Area in the early 2000's and even into the early 2000-teens was NOT like this.
You could go out to lunch and have a technical chat and the people at the table next to you might chime in with a solution!
When you get enough passionate people and pack them into one location things get interesting for them (networking, friendships etc)... Much of the passion is gone (lots of people see tech as a path to a paycheck), and everyone wants to WFH.
That's because it's not a good vision for the future, it's literally either building shit that everyone knows doesn't matter or plugging away at pointless automation on overcomplicated piles of steaming crap. Or the next fad.
People have lost the vision and do not understand the soul of the machine is to improve our state of existence not enslave us further.
Fuck 'em. I'm taking the money and doing what makes me feel good (wine, floozies and travel).
I'd join - not joking either! I'm willing to bet that most technically-minded people have devices that act strangely, and yet are powerless to fix them due to, say, the difficulty of getting GDB to connect via the non-existent serial port to capture the stack trace of a once-a-week glitch. I'm in that category with a few of my devices right now, so a group where people could explain device drivers to each other would be really interesting to me.
Yes, that's the crux, for sure. Meetup or local slacks/discords are where I'd start looking. You could also email current or former coworkers, if you have that info.
I've run a few book clubs online and in NYC this last year. And a Discord for folks in the area in systems programming. And a systems programming coffee meetup in NYC. Stuff like that is what I might guess Erik means! :)