Valentin
I did not say your essay was about consciousness. I just picked up an indication that it was considered that the subsequent processing of physical input received by the sensory systems/brain had some effect on the physical circumstance. Which it does not, it determines the perception thereof, which is not physics. And listed a number of reasons why this must be so, what you refer to as a "bunch of statements".
Re 1, it does not matter what consciousness is for physics.
Re 3 "There is no "conversion" of physical input to perception".
So what is seeing, feeling, hearing, etc, then?? A brick receives light (which is physically existent), so does your mouth. But if your eye receives it then it can be processed and the possessor thereof become aware of the receipt, since it is the front end of an evolved system which can convert it to a perception. The physics ends at the interaction of receipt. Though, obviously, it is important to know how the sensory systems/brain works so that from the perception we can extrapolate (after eradicating individualism as well) what was physically received. Subjective references are irrelevant. Though, by definition, any statement (eg measurement) is a comparison to identify difference, which necessitates a reference. So if the reference is an observer, for example, then the key point is relative spatial position, because light travels from the occurrence, not what the observer thinks, etc. Since, as I said, one of the proofs that the subsequent processing has no effect on the physical circumstance, is the simple fact that that circumstance has already occurred. And in this reality, a subsequent physical effect cannot have a physical effect on a physical circumstance which occurred previously.
Re 4 "Again, in my approach past and future both physically exist in the present"
Only the present is existent. The past is a present that has ceased to exist. The future is non-existent, it is a present which will subsequently occur as a function of the previous present. You cannot have "different" forms of existence. Either something is physically existent, or it is not. What does occur, but this is not what you are saying, is that a physically existent representation of something which was existent can persist in existence. It is called light. And we can receive light that is up to billions of years old.
Paul