I did indeed read it and it made me very sad. I feel that that must be the way babies feel when experiencing CC - babies only methodnof communicating is through crying.
I find it interesting that there seems to be a general assumption that my children sleep. Both my children still wake in the night, I'm extremely lucky if I only have to get up twice. The only occasion I have used a method similar to this is when my eldest would whinge (not cry) and then laugh when I went into his bedroom. The minute a whinge turned into distress, I was straight in there with a cuddle or a reassuring hand. He was never left to actually cry.
I think SP has got it bang on - we have an expectation that babies should sleep but not so. Some prefer to be closer to their mothers and so will cry out for them. Unfortunately that's what you sign up for when you have a baby.