alt Hacker NewsToo many people sure, but it’s doomerism to say third places are “dead”. Bar trivia is still packed, there are still pickup games in the park, and your local library still needs volunteers. I think this online attitude probably causes some people to not even look for third places in the first place.
The idea that anything important is online seems to be ruining in-person activities. Many of those activities you mention are poorly advertised online and easily drowned out by advertising / ragebait / influencer slop. My local food court has a trivia night but the most prominent advertising for it is at the food court itself with posters.