I'm not sure "they don't matter" is something I could get behind. We still have every reason to remember that there's (probably) a person on the other end, one we should extend common courtesy to, and with whom we might exchange perspective-changing ideas, even if rarely.

That said I agree the "reddit" format is the one I always liked best. It just makes more sense for people who want to discuss the same things, to group up online, rather than into arbitrary parasocial masses around a select few persons, as well as the people you know IRL and may or may not have any interest in actually interacting with.