Comment by direwolf20

I've realised that social networks are real–time feeds, not archives. Some archival features can be useful but they are not the main focus of the product. Archival needs are very different from real–time needs and combining them in the same product doesn't work out well.

Consider something simple like Slack: the selling point is that you can send messages to people. Being able to scroll back to last week is useful. Being able to scroll back 3 years is a nonessential bonus.