I know that “the grass is greener on the other side of the hill” is a cliche trope but sometimes it’s true

It's more an observation that you'll romanticize at a distance.

Even now, I'll pop back into Twitter or Reddit or Facebook from time to time, having forgotten their current state. Takes about five seconds to remember why I left, but I do have to go there to get slapped in the face with it from time to time as a refresher.