You read that comment with bad understanding or bad faith. They explicitly argue against tying (epi)genetics to evaluating someone's potential.

Whether you agree with that guidance or not, whether you agree with the implications, such data exists. Trying to wish it away contributes to the toxic hellstorm that exists in public discourse around these subjects. It retrenches the people who are curious about it and sends them into the narrative arms of the people who want to misuse it for their own social ends. It's much more productive to argue why such data is extremely limited, poorly understood and not conclusive.