Maybe the designers were intentional.
From the image above, the wording becomes readable when you flip the bottle.
Ketchup was meant to replace the thinner version of tomato sauce. Behind a TV screen, however, I saw no difference. In reality, it is evident.
Ketchup’s thick, rich taste may sell to customers, but the container engineers never imagined that most of its users would never rely on its broad base. A flipping bottle ensures the contents are closer to the opening valve.
I can’t think of any other product whose flipped position would be preferred to the one designed by its manufacturers.
The opposite of an idea can indeed be a good idea.