There was a time when Apple laptops (this is from memory of an old old MBP) did not have audio jacks. I also remember using a Plantronics headset with a USB connector with my MBP17 at the time, around 2008, and Mac OS X had problems with secure wifi and audio support through USB.
I personally do not need an audio jack present. I currently connect a pair of old Bose speakers to the laptop via that jack but it isn't critical it be a simple audio jack.
I personally do not need an audio jack present. I currently connect a pair of old Bose speakers to the laptop via that jack but it isn't critical it be a simple audio jack.