So here’s the thing… again, let’s please set preference aside as we are all very clear on what you’d prefer.
What is the actual issue with the above? Like what is bad about it? How does it negatively impact play?
There was nothing about the post by @Lanefan in question that stated it was a preference. He said “that’s DM-side only stuff” not “in my game, that’s DM-side only stuff”.
There is no world.
What we’re talking about is content of play.
I would not be surprised!
Interfere with what?
How does this jibe with @Micah Sweet ’s comment above about player’s pursuits “interfering” with… something?
So here’s the way it seems to me… there are two ways to look at the tavern situation. A player has declared that his character is drunk and it hing for a fight, and that he punches the nearest person.
The first seems to be that this is an inconvenience to the DM in some way. Mostly because it’s a player over stepping their expected authority. Any further issues that people have here have yet to be explained. I have ideas, but I’m curious what others might say.
The second is to view this situation as an opportunity. I mean, the player is literally saying “I want to see this happen”… so why deny it due to some slavish adherence to power distribution? Instead, let the player have some say about how the game goes and what happens next. Use the altercation in the tavern as the thing that moves play forward.
For the umpteenth time it's not about "power". It's about the roles we use in the game. I don't allow players to add significant features on the fly because they interact with the world through their words and deeds. If they can alter the world around them by just making it happen, as a DM can I tell them what they think or feel? It might be the thing that moves play forward after all.
We all have different preferences, trying to make this yet again into an argument about how DMs are maintaining "power" over the players does you no favors. So I'll repeat: when I'm a player I do not want to add fiction to the world outside of what my player says and does. I don't want anyone other than the DM doing that.
You have a different preference? Awesome. I think there are better systems for collaborative play but D&D is pretty easy to modify to taste. There is no "slavish adherence to power distribution". We've chosen to play D&D and we haven't added a house rule to have players declare world fiction. That's all.
EDIT: note that we can't simply "set preferences aside" because your whole argument is just your justification for your preference.