*facepalm*
Who cares! It's like saying you won't buy a new computer because it doesn't have a 3.5" floppy disk drive because your digital camera uses that. Both are out of date at some point and eventually this issue will be gone.
Unless you're using legacy headphones for a particular reason (in which case, an adapter will be available for you...) then it really won't matter.
In the future, I'd welcome USB-C or Lightning headphones. They're just like any other peripheral. Why not connect it using a shared port? Having a separate analog audio output that is prone to interference, doesn't carry power for noise cancelling or anything, is really ridiculous in this day and age.