The physical home button is, no bullshit, one of the greatest pieces of UI ever. No, I am not kidding, I really think that. It’s crazy to me that they abandoned it, the gestures that replace its functionality are overall-worse and cluttering the gesture system with even more of them is bad for the overall UX.

Maybe you know this but it wasn't a physical button since i think iphone 7 - it was a haptic sensor.