You took personally a statement addressed to anyone who happened to read it, a statement parents the world-over make when told by a stranger, or "society", others could do their job better, their priorities are wrong, whatever.

Whether it was meant to provoke you personally or not, whether I could tell you would or not, you made the leap to running with it, and I cannot fix that for you, and it does take you solidly from "I don't know you, stay away from my kids" to; No really, I now know more about you than I ever would have asked for and I was more spot-on in the first place than I realized, stay away from my kids.