1. That's a really annoying, passive-aggressive, anti-collaborative way to present he fact about the setting. It assumes that a new player to your table already knows your houserules and mocks them for not knowing things you haven't told them.
2. "I'm running an existing setting, and they don't exist" is a reason, although why they've been removed is still a relevant detail
3. I don't like goblins. Does that mean the dm can't use them? What about other players? Do I as a player have the right to veto them?
4. If the only reason you can give for an action is "because I said so", you do not have a reason beyond personal preference. But any dm that doesn't care about the fun of the players is - well, that's what I'd call badwrongfun. Not caring about the rest of the tab;es fun.
5. At no point did I say players can have whatever they want, and suggesting that I did is a ridiculous strawman.
You're really...assertive about this issue, aren't you? I'm not sure why this is such a sore subject, so I'll drop my snarky CleverNickName persona and answer as thoughtfully and respectfully as I can.
1. I don't really mind if you think my DM style is annoying or passive-aggressive, etc. Your opinion is your own, and you are entitled to it, and I won't try to change it. We disagree, and that's fine.
2. If the DM has removed something from the game, you must trust her to have a good reason for doing so. She can offer explanations or details if she likes, but she needn't justify it to anyone. (I find that this causes arguments, as players take it as an invitation to change the DM's mind.) But at the end of the day: if you can't trust your DM to make these decisions, you have a much bigger issue on your hands. You might need to find a DM you can trust.
3. Players aren't DMs, and don't have the "right to veto" anything that isn't on their character sheet. That said: if you would like something removed from the game (perhaps you have severe arachnophobia, and you would like the DM to remove spiders from the world. Or perhaps you are a survivor of abuse, and you would like the DM to avoid certain scenes and content), you should absolutely and frequently talk to the DM about it. The DM isn't
obligated to oblige, but a good one will. This goes back to trust.
4. No reason is needed at all. Even if a reason was needed, "personal preference" is just as valid as any. I hate to keep hammering on this point, but you really have to trust your DM.
5. My example was anecdotal, and my statement wasn't attributed to you as a direct quote. Also, that's not really how a "straw man fallacy" works.
I think that's all I have to say about the topic. I'll put my sarcastic moogle hat back on now.