It's entirely possible that Apple was going to put a fiber-optic port on the bottom of the phone, or maybe a serial port, or ethernet. There is no point on speculating things without evidence
You're on MacRumors. If there is no point on speculating things without evidence, you're on the wrong forum.
Regardless, I recall Jony Ive mentioning a portless future in one of the product introduction videos. More evidence than your ridiculous ethernet port "possibility".