They had to include the wired - as others have stated - people simply don't adapt well to change (just take a look at all of the whining over the loss of the 3.5mm jack). Also, can you imagine the angry mob that would form by tacking on $160 to the price of the phones to include the air pods?! 
I think the timing is exceptionally poor. BT5 to be ratified over the next 6-8 months. They should have waited and had the air pods released in time for the iPhone 8. But, then, they've also been cagey about exactly what spec they support...maybe they'll surprise the hell out of all of us and they're already based on a BT5 draft...and firmware updatable to support the ratified spec. Sorry...silly me...I was thinking what I'd do.
I think the timing is exceptionally poor. BT5 to be ratified over the next 6-8 months. They should have waited and had the air pods released in time for the iPhone 8. But, then, they've also been cagey about exactly what spec they support...maybe they'll surprise the hell out of all of us and they're already based on a BT5 draft...and firmware updatable to support the ratified spec. Sorry...silly me...I was thinking what I'd do.