Earlier quoted context omitted.
> I hope we’d all agree there’s objectively a color red We don't. For starters there are colourblind people, for seconds there is no specific colour that can be called "red". There is a large and fuzzy category of red-ish colours like blood-red or rose-red. Even if there is some academic "these light wavelengths are the ones" definition of red that is arbitrary. Aliens might have drawn the lines elsewhere.
This is exactly Chomsky’s point. Try to get through life considering the color of the traffic light you’re approaching as a subjective rather than objective fact. To pick an example closer to the morality case: Hunger could equally be called a subjective phenomenon. Aliens may not experience anything like hunger. A rare genetic condition might produce a human who experiences escalating hunger as an escalating degree…
You didn't consider what I wrote - colourblind people get through life without considering the colour of traffic lights at all. They have to. They are colour blind. The colour of a traffic light as a practical matter is a subjective fact. In fact, the practical colour of a traffic light is more subjective than the philosophical take because at least philosophers can be convinced with a wavelength argument.