The iPhone Air battery capacity reaction has been distorted by the current lineup, methinks. It has a battery capacity in between the iPhone 12 Pro and the iPhone 12 Pro Max (from which, I am upgrading — plus five years of wear). Apple's specs page says it gets 7 more hours of video playback than my 12 Pro Max did when its battery was new, and I didn't worry about its battery life until very recently
@stroughtonsmith I think there are also a lot of people out there (like me) who have Magsafe chargers/mounts all over the place and habitually just put their phones on them off and on all day. Battery life is a lot less important for that lifestyle, as long as you have a decent external battery for travel etc.