uhhhhh but you see in the comics he is clearly a ginger as a kid so a black master chief COULDNT BE CANON

That's their main objection (at least that's what they say), that a black Miranda Keyes or whatever would mean the show wouldn't be in the same continuity as the games. You mean Miranda Keyes, the character who's had three different designs and two different voice actors?????

Also in the established continuity things change wildly or are ignored between games, books or whatever other media for incredibly arbitrary reasons anyway, why the fuck would some TV producer somewhere want to shackle themselves to that mess? I will never understand nerds