with regards to charging while using the "charging port", with my 8+ I simply leave it on a wireless charger and it gains charge while making a call. I have a Plesson charger.

I did move to air pods so I have that option as well, but the wireless charge ability and the fact they are cheap removed my concerns. plus with apple providing both adapter for old headphone to charge adapter as well as new head phones with that same connector I am in the camp of, don't matter anymore.