The Prime interface on my 8 year old blu-ray player is absolute garbage. But on my three year old smart TV, it's very nice. Not as good as Netflix but close.
The Disney+ interface is still hot garbage. The continue watching menu is buried many rows down, and even clicking on a show on the front page takes you directly to the next episode itself, not the menu for the show itself. Sometimes Disney+ forgets what episode you are actually at, and starts you several back. So you need to hunt for the menu for the show to reevaluate where you are.