I don’t think ergonomics is as important as the press make it out to be for one reason:

87% of iPhone users use a case.

https://www.businessinsider.com/iphone-case-survey-2014-7?r=US&IR=T

This isn’t aimed at you Alex but time and time again from every tech reviewer I see, from mrwhosetheboss and MKBHD down to The Tech Chap and Tech Spurt. Comments on the ergonomics without mentioning cases. And these guys all use cases on their phones too!