The author is debugging the tensor operations of the on-device model with a simple prompt. They confirmed the discrepancy with other iPhone models.

It’s no different than someone testing a calculator with 2+2. If it gets that wrong, there’s a hardware issue. That doesn’t mean the only purpose of the calculator is to calculate 2+2. It is for debugging.

You could just as uncharitably complain that “these days no one does arithmetic anymore, they use a calculator for 2+2”.