This is motherbucking canon. It is SO canon you don't even know.
All right, with one move I have explained the "out of character" thing, how Fluttershy flew without wings and why they can't change their faces. Also is kind of the cherry on top to the "draw something new in every strip of a copypaste comic" joke.
Now what? There'll be more passive-aggressive dolls and there'll be some Trixie strips. I'm not a great drawer not having a cavity to keep objects and all that, but whatever.