alt Hacker NewsThis. My wife and I built our social life when we moved countries, and we had a group of friends that we'd meet every week or two. But only when we invited them. No-one else in the group ever organised anything. It got really tiring. We could not get anyone else to organise a meet, they always had reasons why they couldn't organise one (but could turn up to it fine). We tried a bunch of things, but nothing worked - if we didn't organise it, it didn't happen. We ended up moving away and the whole social group collapsed and stopped meeting.
I think some people are just the center of gravity, and that particular friend circle revolves around them. Before COVID, we had a friend group that would hang out fairly regularly. Once I left (for a job, not fleeing the city), none of them hung out without me. Everyone was friendly with each other, but everyone also had their own lives going on with their own friends and other circles. While I was the glue for that circle, it wasn't like everyone just stayed at home having pity parties when I wasn't around.
My anecdote might have limited relevance here, but I think it's something worth considering.