While this appears true when looking at a single device class, I could argue that it's not true when looking at computing in general. The current iPhone X cons

While this appears true when looking at a single device class, I could argue that it's not true when looking at computing in general. The current iPhone X consumes more power than an iPhone 6. However, my dominant 2020 computer (phone) consumes less power than my dominant 2010 computer (laptop) which consumes less power than my 2000 computer (desktop).