Me (handing it back unread): "That's nice, it looks like you put a lot of work into it. Maybe you can post it to ENWorld? Ok folks, so here's what is happening right now in the tavern..."
Nothing wrong about that at all.
Since presumably I wouldn't be giving you a written background unless you asked for it, at that point I'd probably find something more interesting to do than be subjected to your idea of DM'ing.
Nothing wrong about that either, since you want to grandstand and be a jerk about it.