Re: We should just all use SCART
"No manufacturer is going to put two ports on a device"
Many manufacturers used to have 2 ports, 1 for charging and 1 for data / connectivity. Now many phone manufacturers have removed the headphone jack, got some room for a second if they wish.
"and what of the manufacturer who makes a properly sealed, fully waterproof device, and decides that wireless charging only makes alot of sense"
Then don't put a port on it, this doesn't mean you need to have a usb-c port, it means, if you do have a port for charging it needs to be usb-c.