Seems pretty straightforward to me:
DM: I want us to play this style and form of D&D game.
Player(s): We don't really want to play that and prefer the earlier style we played.
DM: Either we play the game I wanted or we play board games on game night.
Player(s): Well, Toni says she is willing to give DMing a try so we're gonna go play X thing.
DM: I don't want to play that. I only want to play what I described.
Player(s): That's cool, but I guess you're gonna have to find someone else to play that way with, in the meantime you are welcome to join game X. If not, maybe the next game will be more to your liking. Hopefully, we can still get a board game night in every once in a while too - so you should definitely come to that!
The DM can then whine and insist that no one else should run a game if it doesn't match his preferences without compromise, but not sure why that would be persuasive and not just reason to be like "What the heck is wrong with that guy? He's being a baby!"
I feel like I know this because in the past I was that baby and got over myself.