Would ADA ever address the restroom DOORS? Restroom doors are heavy and difficult to use when you have cane, walker, scooter or wheelchair!

Yes. The ADA covers doors. Doors are required to be operable with 5 Pounds of force maximum and have a closing speed of 5 seconds or greater from fully open to approximately 8” from fully closed. The openers you mentioned are a great substitute. They serve as an equivalent facilitation to the above listed requirements. They come with a very complex set of requirements that covers pages and too voluminous to list here.