How do you know what effect upbringing and cultural values has on math performance? You know because there's research for that. But you can't base any argument

How do you know what effect upbringing and cultural values has on math performance? You know because there's research for that. But you can't base any argument on that when research into alternative (or complementary), genetics-based explanations is being stiffled. Or well you can, but that's just society-scale version of googling for statements that you agree with instead of questions that they're supposed to answer. When you stiffle research directions for political reasons, you're doing politics, not science, and the arguments based on lack of stiffled research don't hold any more water than arguments based on no research.