Re: But muh headphone jack!
As someone who is probably one of the older and stodgier greybeards in this forum, even I'm confused about the bitter clinging to the headphone jacks.
When I'm travelling, and realize that I've forgotten to pack any headphones, it's much cheaper to pick up a pair of wired earbud thingies that will tide me over than to have to buy yet another Bluetooth headset. This happens to me often enough that it's significant.
Having the 3.5mm jack doesn't prevent one from using high-quality Bluetooth headsets, but it provides the ability to use cheap and readily available earphones in an emergency. (Emergency? Ha! Talk about First World Problems.)