Hmmm, I reconsider everything I ever post anywhere carefully before posting and then I can’t help considering it even more carefully because I realise somebody else might and they might spot me being silly and it would be a pity to miss out on a chance to laugh at myself.
Occurs I should check out as much info as I can about the exact operation and function of the v4l#cxxxxx.so files as doing so may reveal enough to me to satisfy my boss with regards to his darned webcam. Thanks @lucyllewy, you gave me an even better prompt that I initially thought.