As someone around your age, I get it. I'm not sure I would categorize all Bostonians in the lanes you've given, I feel like in general mid-30s many people are already set in their ways and it's difficult to naturally find places to meet people.

Not sure where in EE you are from, but I may know of a community that frequently puts on events and also teams up with the Ukrainian diaspora if that's something you may be interested in.