@iplayfast created a new forum topic related to their efforts to use the camera-based examples:
Since it seems their efforts have moved beyond the "connect USB camera directly to the USB-C port while powering the Uno Q via the 5V pin" subject of this topic, I think it will be best to use that dedicated topic for further discussion of @iplayfast's system.
Further discussion on the subject matter specified in the original post of this topic continues to be welcome here.