kinda late but completely agree. recently changed to the latest iPhone 14(the normal one not the Plus) and the back button is by far my biggest issue. I'm used to using my phone with my right hand but my right thumb is way too short to reach the left side of the screen to swipe.
I hoped there was some kind of workaround for it in Accessibilities(gesture in assistive touch maybe) but there doesn't seem to be a solution and my thumb isn't going to grow at age 30.