As someone who cares jack about football, I care because they tried to cheat. I don't care if their method would've worked, I just think crap like this shouldn't be tolerated. What I see here and in other places are a bunch of children throwing a fit because their team is being punished for attempting to cheat in a stupid manner. If it was any other team the only thing that would change would be the source of the salt.
The only "evidence" that exists suggesting any attempt was made to break the rules is an elementary school grade report full of terrible methodology and general incompetence. It seems everyone simply assumes the balls were underinflated when in fact this was never once established to even the most meager standards of scientific rigor.