Citation needed. I find mine useful enough I would never let it just collect dust. Just the ability to have all sounds and vibrations on my phone turned off at all times, yet still know instantly when I'm getting an incoming phone call or FaceTime call, is worth the price of the device.

Apple may not care too much about that. As long as they get sold.

They’re selling more this year than last, so either there not collecting dust or it doesn’t matter that they are. I’d lean towards the former.