That's a fair point, but people of Asian (subcontinent included) descent are pretty damn ubiquitous in the industry, and I don't think anybody worries that they're being discriminated against.
I feel like something more relevant to the OP would be including Latinos, or talking about how rich the parents of programmers are.
I don't think anyone's saying blacks are being discriminated against either, rather asking the question what are the factors driving the change.
British Asians on a whole tend to come from lesser educated poorer backgrounds than average, do less well in school, etc. That they're well represented in the developer and startup community despite that makes an interesting data point.
Once upon a time I was working with a minority programmer. I wrote the majority of all code and he wrote minority of all code. I do remember that his variable names where odd and didn't bond well with mine, hence major problems.