Cables != jacks. Do I have to MS paint a picture for you?
How are Lightning EarPods a terrible idea? If Apple didn't include Lightning EarPods in the box, then that would be a terrible idea. If Apple didn't sell an adapter for you to use your legacy headphones with, then that would be a terrible idea.
I don't know how people are going to charge and listen to music without another adapter. But maybe that extra space, currently taken up by the headphone jack, could be used for wireless charging.
Those issues are inherent to wireless and Bluetooth. If you don't want any wires, you need batteries for power. If you want Bluetooth, the latest and greatest Bluetooth standard only allows connecting to two devices simultaneously. If you don't want to deal with these issues (which I'll point out are the current limits of the technology), you go to Lightning, or use an adapter, which brings me to...
It's not "incorrect" that you won't be able to use Bluetooth, Lightning headphones, or 3.5mm headphones with an adapter. As it has always been for the last few decades, an adapter (along with all its inconveniences and pitfalls) is the price you pay for wanting to use a slightly different technology with one that isn't available on the hardware that you choose to use, which is every bit of a "solution" if I've ever heard of one.
I read that as "my $3000 audio device doesn't have proprietary connections built in to ensure compatibility regardless of if the entire industry moves". You don't think Harley owners would be asking for an iPhone-compatible version? Imagine you're the developer of the HD audio system, and the next iPhone removes the headphone jack, rendering your audio system incompatible with the latest iPhone. Do you just shrug your shoulders, move to Android, and ignore all the people that just upgraded and want to use your audio system with the newest iPhone?
Zero advantage.... that you, me, or anyone else knows of.
If you're saying that Apple will pointlessly and needlessly remove the headphone jack because they want to sell more Beats headphones, or remove it just to spite their users without adding any features in return, then I would agree that yes, removing the headphone jack is stupid and a bad idea.
But I hope that's not the case — no one knows what Apple will be doing with the extra space, or what they'll be able to accomplish without the headphone jack burden in the current hardware. Apple has been trying to reduce the size of the headphone jack for years now, and if they could eliminate it altogether, then all the merrier.
For the record, I don't actually care if they remove the headphone jack. Provided there's an adapter so I can use my legacy devices until they can be upgraded to Bluetooth, I'll be happy.