I'm yet to see a TV with USB C inputs. Unless of course , if you're suggesting dongle-hell as an alternative for all missing ports, in which case, whatever few mm you save in thin laptops are gained back and more by much fatter dongles you have to carry around (or forget).
That is not how Apple works, the reason they do such drastic changes like dropping support for floppy/cd drives, usb A ports is because they want to move the industry forward.
