It’s not suppressed though, it’s just that the current evidence points in one way and much less in the other. There are plenty of review papers you can read to see how people weigh the evidence which you can of course disagree with: https://doi.org/10.1016/0010-0277(95)00678-r

https://doi.org/10.1037/a0026699

https://doi.org/10.1037/bul0000131