I've unfollowed everyone. My feed only shows past memories. I love my feed. I highly recommend it.
FB constantly nags me to "add more friends" to see more posts. I love my happy feed. :)
Has a very similar nostalgic feeling to what you're describing, and a welcome surprise - especially after a long day at work.
See their response to a sibling of yours. They still use fb to keep in touch with people, just not have them on the newsfeed.
I understand this is an hyperbole, but it sounds really too far fetched. Facebook is not the internet.
Edit: OP says they “unfollowed” everyone, as opposed to unfriending, which is what I’m basing this off of.
Be real, social media is intended to magnify narcissistic ego through engagement, not disengagement.