Fad hole
A fad hole is the spot where a fad goes to die. If you try to bring it back, you end up in the hole with it, and you both rot together.
My mom still uses a flip phone. She’s in the fad hole with her dead fad.
My uncle thinks the Harlem Shake is still a thing. He’s stuck in the fad hole.
My friend tried to bring back the fanny pack. Now he's in the fad hole with it.