Maybe Linux phones have that problem. Apple has battery conditioning drivers on MacOS and iOS to ensure batteries last super long. I'm almost 3 years into my my 6 plus end battery life has not degraded substantially. And replacing it is pretty cheap.
Apple is affected. It depends on how you use your device, you can easily kill you iphone battery (as well as any other phone) in two years from normal use. It's one of the main complaints I hear from iphone folks.
That is why "lasts whole day" isn't good enough for a new phone. In a year it will not last a whole day. And it will seriously hurt the longevity of it, but noone cares.
They don't care because Apples batteries degrade much more slowly than others because of that conditioning software. And eventually you always have to replace a battery. Removable makes that a little easier, and a little cheaper, but the tradeoffs (lower capacity, more frequent replacement, worse build quality and packaging) aren't worth it for something an iPhine only need to do every 3 years in normal use.
