Nvidia's approach works just fine on mobile. Devices like the Switch have complex GPGPU pipelines and don't compromise whatsoever on power efficiency.

Nonetheless, Apple's architecture on mobile doesn't have to define how they approach laptops, destops and datacenters. If the mobile-first approach is limiting their addressable market, then maybe Tim's obsessing over the wrong audience?

MacBooks benefit from mobile optimization. Apple just needs to add matmul hardware acceleration into their GPUs.