For phones, I probably agree at this point. I'm very happy with my 11 pro max. It's fast, takes great pictures for its size, and I'm never waiting for it to do something. At this point more efficient chips could be used to improve battery life, but that does not always seem to be a goal. I'm sure Apple (and others) has some research somewhere that shows most people need X hours and that is their target.

My 2018 iPad pro is sort of the same, but as I find myself using it for more and more things, I can see places where more speed would help. It's my goto device now for using LR and sorting and editing pics from my DSLR. It's already amazingly fast, but in cases like this more speed is still generally better.