This does not dispute the fact that if the energy input into the system exceeds the energy expended then weight gain occurs and if the energy into the system is

This does not dispute the fact that if the energy input into the system exceeds the energy expended then weight gain occurs and if the energy into the system is less than the energy expended then weight loss occurs. It may be hard to balance things in a healthy way and to achieve a desired result but the underlying physics is not a meme and not incorrect.