But not everything can be seen by the human eye! The difference would be in the DNA. The question is the basis for the entire study of epigenetics. Do phenotypic all changes change the DNA and in turn create a trait that can be passed on to the progeny?
See when a plant shows intersex traits naturally, whether through stress or simple genetics that genetic trigger was likely already encoded into its DNA, so it's more likely to pass that trait along to its offspring. When a plant is reversed using chemicals, that trait may not have existed previously. So the question is, did the chemical application permanently change the DNA of the donor plant? I genuinely don't know the answer, despite researching it in depth over the last several weeks. There's strong arguments and evidence to both sides.
I have half a mind to try and reveg the reversed Hippy Slayer just as an experiment to see if it would still produce male flowers after its flipped again.