It is offensive because the word "black" in the phrase has negative connotation, right? If so, the stance Google engineer took was not progressive enough. I suggest a purge with rigorous examination on at least the following phrases on top of my mind: black cat black money black sheep black frost black market black humor black plague black widow black monday black ops black hand black death black magic black propagan…
And I don't understand the downvote. The Google justice fighter didn't ask to rename "black hat" because of negative connotation? If it is about negative connotation, why is it wrong to examine all phrases, especially the ones like "black market" and "black hand"?
Racism is important. Hacking is important. Spending cycles working in these areas is better than helping those who struggle with googling “is blackhat a racist term?”
In this case the speaker shut off discussion anyway by not participating. So he’s not “examining all phrases,” he’s issuing judgement on a phrase. And his judgement seems silly to me.
I don’t know the subject so perhaps his material is great, but based on this one action it seems unlikely that his judgement would be great on blackhat hacking, but ridiculous in this area.