Malmaman I agree with you and your ilk.
The whole point of the article, and I can't believe it has caused a row, is that the whole "no smacking, talk calmly, use time out" philosophy, sensible as it may be, leads parents to believe that this philosophy must be present at all times because we are told that smacking and shouting damage children so any break from this philosophy, even mild or temporary will damage a child.
I fundamentally disagree - seeing my mother as a normal human being who had meltdowns now and again (or more!) and who was sometimes frankly out of line - did not damage me. It was healthy. She loved me, gave me stability, taught me how to function and crucially, taught me not to be afraid of emotion. Children need to function in the real world too.
Now atm my daughter is a freakishly good 8mo - she rarely cries and is lovely and smiley and sort of always has been. So I don't have to worry about this right now and this is all a bit academic to me. But I know when I do have to face it, I won't be superhuman.
I will try to employ sensible strategies as much as I can. But when I am exhausted and fed up and miserable and she is being a nightmare and has been for the last x days, I won't worry too much about the impact on her if I have a meltdown and shout and cry or even bash one of her toys about.
She can laugh at me after because I am not a god - I am a human mother and she will know that I will always love her even if I have the screaming habdabs some days (and secretly I might even think I hate her some days - I have heard several people say that they think this sometimes). She may not love me - I hope she does but that is her choice - but I will always love her.