On the iPhone, sure, but it would be equally wasted on Android phones because who needs this much performance in a phone anyway. However, I expect them to also use it in next year's Macbook Neo, which is a surprisingly capable laptop for its price with even the A18 Pro chip. It also bodes well for the next generation of their M series chips if the A20 Pro is this fast... and there are TONS of people using Macs for real work. Code compilation in particular got super fast with the M1 Pro and I believe it's great for creative applications too, though I haven't really used those much myself. Creatives types gravitated towards MacOS even before Apple Silicon, especially video editors because of Final Cut Pro.