I don't think I have purposely distorted the author's thesis.
It is his thesis that gasses do not create heat. Fiberglass insulation in your home's walls and ceilings do not create heat either.
Yet we know that fiberglass insulation is a barrier to the flow of heat, and we add it to our homes to slow the movement of heat either into or out of our homes, which is also what greenhouse gasses also do.
Yes I see and your argument is sound.