From my limited experience, all bluetooth speakers (and presumably headphones) have a slight audio delay, which makes them really annoying for watching anything video-related. Or have some of them now got to the stage where there's no delay?
I'm perfectly happy with the one port thing - if they got rid of the headphone jack, I simply wouldn't have bought this notebook. We're not even close to the point where the headphone jack can be removed, imo.
I don't believe that for one minute. All it would require is a simple $29 adapter (for instance http://hifimediy.com/tiny-dac ) to convert the USB-C port to an analogue jack for your wired headphones, assuming wireless headphones actually aren't up to your standards. So you're saying that you would give up the lightest and smallest MacBook ever built, the only sub-portable with a Retina display, along with all its other postive attributes; because you would have to buy a dongle for your headphones, even though that dongle would greatly improve the audio quality output from that Mac? It's actually an unbelievable statement.
And would you care to qualify why we're not even close to the point where the headphone jack can be removed? People use wireless connections every day without any complaints. Apple is marketing their bluetooth headphones for watching videos. Would they do that if it didn't work flawlessly? There's no wired headphone on the Watch. So clearly we are well past the point where the headphone jack can be removed.