Reminder: Apple selling this does not mean every single iPhone 17 Air user will be needing this. It's there for people who get enough battery life with its built-in battery, but for those occasions where you think it might not be enough and you might need to top up. I own a 15 Pro with 90% attery health and it lasts me through the day, my sister gas a regular 14 and it lasts here all day. So for people like us, this is great because the big win is it's not a brick. Btw Apple likes selling accessories as they have like 600% margins on them.
lol yeah that's why it doesnt work with any other model other than the air