Tesla also has its own NPUs for self-driving - and Tesla uses transformers for sensor fusion. My guess would be that the main use case for an NPU in iPhone jus

Tesla also has its own NPUs for self-driving - and Tesla uses transformers for sensor fusion. My guess would be that the main use case for an NPU in iPhone just used to be image processing/computational photography. Thus the CNN bent. Also makes sense with the timing - back when iPhone first got its NPU, CV was the killer app for ML.