Apple switched to a larger screen size not because they thought it was better but their phones were losing out in showrooms to the larger Galaxy phones.
Well, when you can't go thinner and lighter without ruining structural integrity and battery life, you go bigger with the screen. Gotta keep people on the upgrade treadmill so they can visually see who is up-to-date, just like the notch.
Apple switched to a larger screen size not because they thought it was better but their phones were losing out in showrooms to the larger Galaxy phones.