Fascinating: outside of the established, pre-defined fantasy kitchen settings, I always looked at D&D as a toolkit to “build up” your own settings, not as “shoehorn all of these options into your setting, no matter what”.
Personally, I've never seen D&D as a toolkit. Not even the editions which billed themselves as such. They are quite biased toward specific thematic, conceptual, and mechanical/procedural elements, and often
really bad at anything outside that space. E.g. they're decent at survival, but pretty bad for intrigue, other than having the absolute bare bones minimum of "well roll a die and we'll find out".
Is a DM really considered a power hungry, narrow minded snowflake if their homebrewed setting doesn’t have orcs as a playable species? That’s hyperbolic but it seems to be the explicit opinion by some here.
No, but the way a lot--and I mean a LOT--of GMs talk about this isn't like that. It's not "well there just...aren't orcs in this world".
This thread is like a microcosm of internet discussion. Everyone (including me) taking others’ statements in mostly bad faith and yelling past each other.
Perhaps so; perhaps not. Remathilis did note, upthread, that AlViking, for example, did exactly the thing I was calling out: pushing an extreme viewpoint where there are only two possibilities,
either the loudest jerk runs roughshod over the whole group,
or the GM is always right no matter what and the players
never get anything they want if the GM isn't already on board.
I’ve done the whole “collaborative world building, never say no to the players’ ideas” thing and it always ended up turning into the infamous Homer Simpson car. I had to give up all preplanning and just ended up improvising everything. That was fun for a session or two before I lost all interest or incentive to go on DMing it.
To each their own, but if the players tell me that they want to play a lore-adherent Witcher campaign using D&D, and someone still insists on being a Tortle, I’ll feel a tinge of annoyance. Yes this has happened to me (replace tortle with ninja cat furry).
But isn't this exactly the extremism you just decried? The only options then are that the player surrenders everything, or the GM surrenders everything and throws all consistency and caution to the wind,
necessarily meaning any player contribution destroys all the good or worth in it.
God forbid we actually have some middle ground here where GM and player work together, actually building something they agree is awesome rather than one person shouting all their demands and the other person either accepting absolutely everything, or walking.