I can't remember what it was like when using my iPhone 6S since its been a long time. But what's wrong with those buttons? They are the most useful buttons that I use so many times a day.
I would find it very annoying if they removed the feature.
I didn’t say anything’s wrong with them, I’ve just never encountered them (I use an older phone). The camera icon seems maybe superfluous if you can still swipe left to access the camera, but maybe you can’t on the newer phones? The flashlight seems useful for sure.