You should look at Scott’s thread: Scott's Apple Experiences Through 2025
He removes anything that is too disease prone and talks about their resistance in the thread. In other places he’s posted that if he didn’t want to do stone fruit he thinks he could have gotten away with organic growing.
I don’t think that would be possible for me where I am. However, one year I got really good fruit and only sprayed 3 times. So you can definitely do some very minimal spraying and make it work.