Agreed on the high level of cynicism here -- we've also come to expect that. Moreover I never come to HN (my account is five years old) to point out sexism/racism -- it's just too sensitive and difficult of a subject and to be honest I'd rather just read/talk about topical things without getting political. But again, what I pointed out is stark and I have no other explanation for it (believe me, I want one).
Let me point out the title of the blog: "Google Student Blog: Google news and updates especially for students". Of course there is PR going on, and of course the achievements of an intern will often be on a smaller scale. But this particular achievement is high-impact and the intern deserves credit on that blog for her work. If you're not impressed, then just move on.