Yes, another article to make anyone feel guilty who can't tell if their baby is hungry/ tired, and who's baby doesn't magically fall asleep when gently placed in their cot...
I don't think she's talking about controlled crying, at least not as I understand it - letting baby cry for a certain length of time before going in and comforting them. I think she's talking about crying it out, where baby is left to cry until it gives up, which I can understand being stressful.
All I know is that the happy, loved, intelligent, sociable baby she described at the end of her article reflects my dd absolutely. We 'trained' her with controlled crying at 3 months, and it worked for us. She is a very confident, independent and well balanced child. And very much loved.