true. but that was "brightmoon" argument in the first place: "In vertebrates without limbs we see the same genes for making limbs". means that those creatures lost their limbs. so as we both see now its not true since those genes are multifunctional.
It's more complicated than that. Some genes are properly lost, such as the primate gene for vitamin C, while some are repurposed. There is a difference, and a need to explain why non-functional genes are still there.
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