The headphone jack is needed for optimal sound quality. W1 chip does not bring it. I guess the same people who think wireless headphones are better, think that Beats sounds good too... Technology goes forward and new things replaces old ones like SCSI, 3.5" floppies etc. but wireless headphones are not replacement for wired even they serve the same purpose. Many musicians and other audiophiles need best possible audio quality for their work and iPhone as platform has been suitable for many people until removal of the jack. Sure, it's Apples business decision but lying about the reasons is not the right way to do it.
The point of the guy's video is not the use of wireless or wired, mostly that Apple lied that headphone jack wont fit inside the phone. People are just circle jerking and bashing the guy and enjoying their "I have to wait and buy earpods since that's what Apple wants me to do".
"I think Apple Airpods sounds amazing!" is personal opinion. The audio measurements have been average and they don't fit everyones ears. With headphone jack you can buy whatever you want for your purposes, quality and fit. Obviously also with other wireless buds too if their quality is enough.
https://www.innerfidelity.com/images/AppleEarPods.pdf even the earpods with same form factor aren't that good and they are wired.
Apple left a little space in there because they have a barometer in there that now won't work right on that guy's iPhone. So congrats, you can put a jack in there if you're willing to break part of the phone.