That would imply that the goal is to be some kind of over reaching overlord.I really wish they had not left in a loophole that phones can be portless. It'd be just like Apple to try to force a portless phone on us.
USB ports are much more efficient for charging, and allow for bare metal OS restores when things go wrong. It would be a huge loss for them to go away.
The main benefit and probably idea is ending micro usb which shows up in a lot of devices (not only phones) but of course Apple is always on the news.
If they want to do portless, then do it. It will sell or it won't and that's perfectly fine.