Short Quill is not happy.
He has just written what he considers to be the short story he has put the most effort into and now he can't get it published. It was meant to go into a weekly leaflet of short stories known all across Equestria, but the publisher believes it doesn't meet the specific taste of readers and wants it rewritten to be more orientated about the princesses. This is the first and possibly only chance for him to become known outside of Manehatten and one way or the other he's going to get it in the paper.
Even if he has to come up with something he absolutely loathes.