When you can find a few examples of some group succeeding or being where the vast majority of their group are not, it's called "tokenism", and it's a self-defeating argument. Is it common for low caste Indians with no security to successfully bootstrap profitable apps? Are they a significant constituency amongst tech leaders in India? Rags-to-riches stories only prove something is possible, not that it's normal.

We have no problem understanding how subtly performance enhancing drugs in sports can make huge differences over the long term. Why are we sceptical that performance degrading circumstances are as consequential?