The thing that I hate about what social media has done is that it is resistant to persistance of knowledge. I grew up in the heyday of forums (late 90s to mid-late 00s). It seems like a lot of these groups have moved to facebook (or discord, or whatsapp), and now a lot of that knowledge for specialty stuff is unsearchable and behind a wall.

One of my hobbies is boatbuilding, and there is a LOT of good material that is still available on forums since they just happily sit there seemingly forever, and are easy to archive. But a lot of the new stuff is now done on FB, and it means that knowledge gets pushed to the bottom of the feed, and it is impossible to archive.

My feeling is that the switch to algorithmic feed-based discussion is a serious regression for a lot of interest groups.

An excellent illustration of this is Stack Overflow. They take after the forum model of preserving knowledge to the degree that they shut down discussions that have happened before. Stack Overflow's database of solutions brings literally billions in value to the world, and it simply would not work without persistance of information.