But D&D isn't the referee vs. the players. It's the players, through their PCs, taking on the world at large. The system favoring the PCs in no way prevents a DM from running the system in a neutral manner. It just means, if the system is in fact biased toward the PCs, that run neutrally they have a much better chance of prevailing.That's where the contradiction comes in. I'm not neutral if I'm okay with the system being wildly stacked in the players' favor. That's not neutrality. That's being biased for the players. To then run that biased game "neutrally" is to accept the utterly biased outcome...so not being neutral.
Now those odds can easily be modified and then run neutrally from there too, but the system itself can be player biased and still run in a neutral way.
You can run 5e so it's not superheroes or Grim and Gritty (or you can as either of those), you can absolutely compromise and run in a way that's fun for both. Or not, and find a group that fits your exact style.Compromise is not when one side simply gives the other what they want. Compromise is when both sides move and give and adjust so that the other is accommodated. If the players say "we want epic fantasy superheroes" and the referee says "I want a grim and gritty AD&D game" it's not a compromise to run 5E...it's running the game exactly as the OC players want and in an opposite manner to what the referee wants. That's not a compromise.
This is why deciding to play together as a group first so often leads to everyone being disappointed. The referee says they want to run a particular style of game. If the players want that style of game, they play, if not, they don't. Simple. If the players want something different they can run the game. The referee is under no obligation to run the game for the players in a style they don't enjoy...nor are the players obligated to play in a game or style they won't enjoy.
Or the DM can run in a style more in line with what the players want but put his own touches on it. If the DM is all "My way or the highway..." he can't be too upset when the players choose the highway!