New Sony camera has USB-C, SD was never a 'Pro' card - more for casual consumers. Useful in a laptop but not exactly a 'Pro' feature to begin with. Cameras have also been using WiFi transfer for many years now, pretty sure even low level amateur cameras come with WiFi these days.
HDMI was made for TVs, DP was made for computers. HDMI lacks cable retention and included DRM which is what made it an odd choice for computers, only reason it's there is for some kind of standardisation as it's basically the same technology just different ports - which is where USB-C is quite useful as it combines all these different technologies into a single port.
People seem to miss the point of USB-C, it's just a single port. So you don't need to upgrade your 30 year old VGA to a DP, and then a mini-DP, and then an HDMI every few years as the port technology adapts. This always resulted in defunct ports on your computer and requiring dongles or adapters to make use of new technology. With USB-C you can just get a new cable and still make full use of the ports on your computer, meaning it will last for longer and isn't as prone to obsolescence as previous models. Short term yes you loose an immediate port, long term you gain any port you want.