While I agree with the sentiment, we seem to often jump to extremes in these discussions. I highly doubt Google would hire you based on your minority status over your technical qualifications alone. There are many factors in any hire whether you are a minority or not - candidates are evaluated on their technical qualifications, manner of speaking, "culture fit", who they know, where they're from, etc. Just because all of these come into play does not mean any one of these is going to outweigh the ones most directly related to the ability to do one's job.

There is a tendency to think that each new hire is always the far-and-away best match of all candidates and so any influence that diversity policies might have is at the detriment of a superior candidate. In my experience with hiring, the final round of interviews usually comes down to a handful of equally qualified applicants. Barring any sudden red flags at this point, whoever gets the job is just luckier than the others.