Requiring a separate kit made of HDMI cap box, and two usb cables (assuming the box power is feedable via usb) also makes canon create further e-waste. That's only because they're greedy and that stuff is already inside. And nothing on the site of the camera https://www.canon-europe.com/cameras/powershot-g5-x-mark-ii/... gives any indication that such external app and subscription would be required.