Goodness. I had just been thinking about exactly the same thing. A friend of mine posted that earlier today. I was rather disturbed.
While many/most of my FB friends are in the same field I'm in (a field that, shall we say, encourages lively debate on such things), I was originally inclined to respond. However, she's a friend from my early school days (one I was very happy to get back in touch with) and I'm not sure at all how she'd respond.
I'm having a hard time letting it go, though.
Let us know if your friend responds at all, please!