That's all very nice, but it seems to me to be besides the point. On point would be to answer the question (to yourself) of what you are going to do when you a

That's all very nice, but it seems to me to be besides the point. On point would be to answer the question (to yourself) of what you are going to do when you are part of the hiring process for open positions at that startup, or when you are approached about mentoring, or making an angel investment, or making an introduction. Given that you seem intent on dismissing the issue as somehow unknowable as well as concluding that the only course of action is unrealistic, my best guess is that you will happily behave consistently with your cognitive biases, rather than working around them. That doesn't make you a racist. It just makes you ignorant, and one of a proud majority, it would appear.