We've had retarded creatures making a fool of the 10 year old with powers before or even the big muscle man with powers, but at least they had charm.
Along with the characters' look and behaviour being ASS, it's the complete lack of action, ideas and logic that bothers everyone who isn't an idiot.
So the gnome ignores her last 99 threats. I expect him to logically know something I don't, I expect him to pull out something that evolves the dynamic of the episode. Nothing happens.
Star tells him he'll slap his shit if he tries anything funny, he tries something funny and she slaps his shit. The End. No in betweens like the gnome calling his big brother, sending the hero to another world, mind controlling the civilians, doing something unexpected to forward the plot.
As soulless, senseless and stupid as you'd expect out of the characters' behaviour and looks. Retards gonna retard.