...has nothing to do with it. I think it is in ever single way the right and obligation of the GM to change anything and everything they like about a game or setting for the sake of making it one that they AND the players will have fun with. I don't for a moment support the notion that the GM shouldn't be changing things from how it is printed in some campaign guide book. Hell I almost never even USE a campaign guide book!
So the designers removing things at a whim because they don't like it is ok and not needed a response, but a DM to do so for not liking it requires a response?
It have everything to do with it. Had the designers explained to players to begin with that everything wasnt meant to appear in every game, as opposed to recent accounts where they claim everything should be allowed. Then problems of disallowing ANYTHING for ANY reason would more readily be accepted. Even if that reason is as simple as "i don't like it."
Seriously, Random Douchebag X with their name on a product gets more respect than the person you know, is supposed to be a friend, and ask to do the work to make YOUR game run?
By adding something to Forgotten Realms without also adding it to Dark Sun, they have removed that from Dark Sun, and also the core of the game.
Why does Random Douchebag X get more respect than the person you have running your game for you?
Of course but my point is for some people it is
Hobson's choice, rather than a case of well if they don't like this DM they can find another.
I didn't say find another, jsut simply leave this game. It is your choice to make to try to find another, if you can, but no one is holding a gun to your head and making you stay in a game you are uncomfortable or unhappy playing in.
And lets no go further on the fake "friends" excuse, because if they are friends to begin with they you wouldn't be trivializing over reasons why someone doesn't like something and just sit your butt down and play the game with your friends. Which is more important, the game element a GM doesn't like or the combination of your friends and spending time with them?
You need to get your priorities straight before you can make the choice, but it is still your choice to make. Does your want to have Element X in the game outweigh your want to play the game with your "friends".
If they really are your friends, then Element X being in the game or not should not matter.
You make your own chocies, don't place blame on others for them, as only you can make them for yourself.
As a counter question to the OP I would ask, why is the fact that something appears in a rulebook considered to be good enough?
DM:OK guys lets talk characters.
Player: I got an idea for a really cool cleric. I'm gonna...
DM: No clerics. At least no clerics with spells or clerical abilities.
Player: Wha.... They are a core class, you can't just ban them.
DM: They don't exist. The game is set in Krynn pre-war of the lance.
Player: Ok cool.
Why is not allowing clerics suddenly cool because an "official" world says so?
What if the DM simply said that in his world clerics lost their powers long ago and nobody knows why? Would the player just accept that at face value?
Because as Rel said, it "...has nothing to do with it."