"Modulation is the process of converting data into radio waves by adding information to an electronic or optical carrier signal. A carrier signal is one with a steady waveform -- constant height, or amplitude, and frequency." Which stream of photons is the carrier signal?
Oh, so it's a bunch of different ones that contain different signals that can't be decoded into any additional information other than the presence of an object i.e. ordinary eyesight.
The information is actually encoded in the spatial position of the receivers(i.e. retinal cells)? That's not radio communication, anymore than a radio telescope detecting a pulsar is "communication" from a star. If there was some intentional encoding of information in a manner that was relatively indifferent to the position of the observers of the signal, I might agree. Such as, opening and closing ones hand in a Morse code. That would be much more akin to radio communication.
A lot of people take for granted that they're paid in chickens instead of a more liquid form of recompense. That's problematic too.