Instagram was much simpler back then. It wasn't a general social media platform, it was just for posting square images with captions. No DMs, no videos, no stor

Instagram was much simpler back then. It wasn't a general social media platform, it was just for posting square images with captions. No DMs, no videos, no stories (that wasn't even a thing back then really), no status updates, etc. And it was only accessible on smartphones. And that was around the time Facebook's original audience had their parents joining Facebook, making it less of a safe/cool place to screw around with your friends. Instagram had less appeal to parents because of all those limitations, so young people migrated there. Eventually the parents got on Instagram too, and they moved to Snapchat, which has so far done a pretty good job at being indecipherable to older generations, and focuses on making everything private, only sending stuff to people directly or whitelisted groups of people who can see your stories. Not to mention, everything having an expiration date means people won't be able to scroll back and see cringey/embarrassing posts you made a few years ago.