Which then made me wonder: is there truly no good social messenger that's separate from social media now? Signal was the closest I could come up with, but it's missing lots of niceties especially in group messages.
The one thing that I don't see a good replacement for at the moment is event management because it inherently requires visibility to many people. As a musician I have been advertizing by events on FB (together with good ol' newsletters). Conversely, I have found out about many cool local events I would have missed otherwise. I'm using past tense because I have deactivated my FB since. (Meta sucking up to Trump broke the last straw for me.)
While an online marketplace doesn't require social media (see Craigslist), like events, you're missing out on a large population of potential sellers/buyers if you're not on Facebook.
This is almost everyone on FB...