A bit like the recent VW screw-up, the Apple folks are now trying to undo the damage to customer relations by offering a product (battery replacement) at a price that likely represents a loss for them.
So... those of us who have owned their iPhones for 2 or 3 yrs (like yrs truly with an ancient iPhone 6) will get brand new batteries and improved performance for pocket change.
Bear with me, but I don't think the Android crowd can take advantage of anything like that.
Transparency would have avoided the whole mess. Then most of us wouldn't have upgraded to the newest iOS... but I wonder if the app developers have a ton of trouble designing stuff that works with multiple iOS's... ?