Because touch sensitive didn't work properly. "The new-look Siri remote included here is thinner, and ditches the touch-sensitive trackpad in favor of a circul

Because touch sensitive didn't work properly. "The new-look Siri remote included here is thinner, and ditches the touch-sensitive trackpad in favor of a circular clickpad, which makes scrolling through the interface far easier. “For the first time, the Siri remote has a power button, so you can use it to switch the Apple TV 4K on or off, along with your TV too, and it also now features a back button and a mute button. The Siri button has now been moved to the right-hand edge of the remote. "