Yes but the phone physically cannot be smaller than the screen.

So if the screen itself is too large to be comfortable, it is physically impossible to make it comfortable to use without making the screen smaller.

I measured the radius my thumb can reach, I know exactly the limits of my reach, and thus exactly the largest screen I can use without causing discomfort in my wrist.

The point I am trying to make is that the ideal phone size is personal to the individual. There is no one size fits all. Screen to body ratio cannot change that.