I really don’t get this “third place” thing. People can still just go do stuff like they always could. Clubs, teams, community events all still exist.
I could be wrong, but I thought the "third place" thing more specifically refers to a pretty local institution such as a tavern or coffee shop where people meet regardless of club/team affiliation(s).
There may be more coffee shops now, but there are a LOT less neighborhood bars - or at least it sure seems that way in my Chicago neighborhood where one can see evidence of long closed bars on every other block.
I've starting thinking that the constant use of "there are no third places anymore!" is more cope and deflection of blame than an actual description of reality, often from people who want to use The Man or The System as a scapegoat for their own lack of socialization. There are still tons of third places, people are choosing to stay home instead of using them.
People can still just go do stuff, but they don't. They stay inside and watch screens all day because they're poor and sick and depressed and exhausted and addicted to their phones.