> We haven't had phones running laptop-grade CPUs/GPUs for that long

Agree to disagree, we've had laptop-grade smartphone hardware for longer than we've had LLMs.

Kind of.

We've had solid CPUs for a while, but GPUs have lagged behind (and they're the ones that matter for this particular application). iPhones still lead by a comfortable margin on this front, but have historically been pretty limited on the IO front (only supported USB2 speeds until recently).