I would think that someone who enrages over that detail and claims that it's what will cause then to boycott the game weren't going to buy the game anyway, or were already leaning that direction. People literally dig through the pixels to find something, anything, to take the piss over.
true and there was several who claimed to only play Halo because of co-op split-screen implying they dont even play halo for halo itself. People were just using split-screen to confirm their already made up decision about the game. They weren't interested. They were ultimately going to play SP, finish it and then drop it to never play it again or in 6 months. No one plays Halo SP consistently for 2-3 years straight.