I wrote in haste while the mother's article was fresh in my mind and I was still assimilating Armstrong's latter statements, and it colored my reaction. I went back to rewrite exactly that part 10 minutes later and I was locked out by noprocrast. Consider my post retracted (and feel free to moderate as you wish, up to and including deleting my account).

I still have deep problems with his statement, and I haven't figured out how to articulate them better yet. But for now, my apologies to Tim Armstrong—whatever he said does not justify my hasty and unacceptably uncharitable reading.