Does anybody see the goof?
reversed images are often used for such ads , seen for example in movie posters, to same money on new concept and or to save time and re use same image in reverse to give the sense of a new look to the same image
Why do you care?
Also, not a “goof”. It is the way it is because that’s how it was intended to be.
Is it really that big of a deal?
These be ambidextrous Spartans. All the more reason to include “Lefty or Righty” in the options.