Judgemental or what....?!
I saw it too and felt sorry for her....I am ashamed to say I have been frustrated once or twice in 13 yrs of parenting and at points have been quite depressed and skint...I am not justifying hitting a baby but I bet a lot of people here have done things behind closed doors in frustration that they would never have the guts to admit.
I respect the OP of the pulled thread for being honest, recognising she needed support, and asking for it.
If we react like this as a society then people will never admit they need halp before something awful happens.