What you say is valid in theory, but in practice I have really not seen it pan out. In the end I still cannot fathom rejecting 90% of phone on the market, hampering everything I want from a phone, just to make an empty statement about a port almost nobody uses.
I've had my current phone for almost 4 years, I have wired headphones (so I'm already a minority), I have only had 1 dongle which I use everyday with it, and everything is completely fine and shows no signs of changing. The phone's battery is so much more likely to die before the usb port ever does.
It just seems like an issue that has been clearly solved and I see no reason to ruin all your phone choices over it.