"My argument would work if the whole world was different, therefore my argument is correct!"
Or as I like to say
"If we had some ham, we could have ham and cheese sandwiches – if we had some cheese."
What are you even saying?
If we lived without copyright the world would be different because of it. Insisting that a world without copyright look exactly like our own is dishonest
The original author is arguing that the world would be better, but I don't think he successfully argues that. (And I personally do believe a no-copyright-at-all world would be worse than what we have now.)