The “Friend” You Only Spent 5 Minutes With
medium.com
medium.com
The only thing that interests me on Facebook is what my "friends" have originated. My interest and time spent have declined in direct correlation with the amount of said content.
Eventually I realized I wasn't getting a lot of value from facebook and left entirely.
1 - Unfollow all your "friends".
2 - Unfollow friends that post too much. Only get in touch with them by email or presencial.
3 - Facebook becomes so static that you hardly ever have the urge to visit it.
Deleting my fb account has been a positive experience. Real friends stay in touch, and the stressful negative/argumentative comment threads and posts are gone.
Admittedly I still use instagram. Their model works well to let me keep in touch loosely, without highlighting every like/repost/comment of the people who I follow.
I like your idea of "real friends" VS temporal friends. One problem with only having "real friends" is that people get hung up on them, and if circumstances separate them they'd have a harder time acclimating with the change.
If you keep LI to only people you've actually spent more than 4 weeks working with, it becomes a lot more sane.