The extent to which such a list is accurate and complete is the extent to which it’s a great list of startup ideas to destroy some community institution, make it impossible to do without an app, and put ads on it.

Maybe in your experience. It isn't in mine. You can make due with email lists and flyers and word of mouth and if someone tries to push an app for it everyone is welcome to ignore it.

Chess clubs in my city mostly closed down due to online games. I remember the largest club owner complaining of this in the early 2000s

Yeah, this really is the key. I've moved several times as an adult, and my new friend group always comes from doing sports or some hobby regularly with the same group of people.