Welcome to a world of hurt, a lot of people have been appalled before you and many too, have complained to Apple. Unfortunately there is no way to disable it.
The only way to avoid it is using third party camera apps or shooting in Apple pro-raw with the native camera, that way the effects are not as aggressive.
I’m not sure but I can tell the pictures seem to lose HDR, I only do this when I want to take a picture of something and the over processing gets ridiculous. Sometimes normal pictures look great so I don’t know what’s the variable, maybe it’s the lighting.