You seem to think that I have some sort of expertise in the subject of tired light - I don't - I merely believe that because space is permeated with particles the absorption/emission of photons results in their loss of energy.

If a beam of light is projected through a glass block that object will heat up and remain warm long after the beam has departed.

This accrued energy must come from the photons that passed through the object thus they would emerge from that medium redshifted compared to their frequency upon entry of same.

This is not associated with the scattering challenge aimed at Zwicky's intervening particle suggestion.