...and in order to do so, it's English today.
Generally I find therpgsite.com not overwhelmingly interesting, but this topic caught my interest.
Firstly, there probably is a misunderstanding. To the Forgite the GM is a player, just like there are 11 players on a team in football: The keeper is one of them.
So let's assume we have a GM who abides by the rule of "Say Yes or Roll Dice". That means he has no formal veto against anything another player might say, but he is still a player himself.
Now assuming someone did that atomic bomb thing on Middle Earth the GM couldn't say no, but the guy who happens to GM at that time can say: "Man, you sure talking shit right here."
That might seem confusing, but you have to understand that to the Forgite the GM is really just the keeper, and not the captain. The latter is often dubbed "alpha-player" in Forgespeek, and of course the guy who GMs has a good chance of ending up alpha-player, too.
That means, to you GM might be role, but for the Forgite the GM is only just a rule.