These points were all disproved long ago. The jack is a the same thickness as the display.
The reason is because BT headphones have a much higher margin, and need to be replaced every few years because of the battery (if not already replaced because they were lost or damaged).
It’s just a dumb cash grab.
Ulrich@feddit.org 9 months ago
The headphone jack is 3.5mm. iPhones are ~7.5mm thick, more than double. The smallest phone available on the market is 4.2mm.