I bought one about a year ago expecting the gimmick to get tiresome but honestly I love it. I bought one a couple models old so it didn't even cost me that much, I picked up a Z Fold 2 around when they were releasing the Z Fold 4, I think. So far it's been great and I absolutely love being able to fold the screen open for gaming or for reading. The single front screen is a bit skinny but you get used to it.
I've read about 3x more books since I got it than I used to, and emulator gaming is getting new life (as well as native games like Polytopia or Slay The Spire). I honestly recommend them, which I didn't think I'd find myself doing.