Fair point.

I definitely won't argue the strong role of genetics in many- if not all- preconditions of human health. I think ignoring genes is a willful blindness in its own right.

But disavowing people's agency in their health and fitness has been a very bad road our culture has gone down. The human genome has not changed so dramatically in a handful of generations that we can point to an obesity and addiction epidemic and say voluntary behavior played no role- and it's very destructive to evidence-based medicine when that idea is promoted in the name of political correctness.