From my personal experience, the 3rd spaces is a huge thing. I’ve met my wife in such a space, and pre-Covid I’ve run a large Meetup group that focused on safe socialization (dinners, cinemas, hiking, art events). I’ve seen countless of hookups and dozens of marriages within that group. Covid pretty much killed Meetup groups on our area, so when we want to socialize all that’s left are pubs and clubs, and there I only see single-gender groups with no overlap. I doubt anyone is getting laid, and even if they do, chances of a meaningful relationship before actually knowing each other’s likes and dislikes, and common interests, are minimal.