I totally agree.
"Growing" is probably a better word than "devour".
In a companion essay, I try to make the argument that AR peripherals are likely.
My best guess is that a smartphone-like peripherals will be shipped alongside the flagship AR/VR headsets. I guess the AR headsets might be viewed as the "peripheral" in the beginning, but I think eventually the AR headset will be the main focus, and the thing you hold in your hand will feel more like a keyboard/mouse.