LOL, every parent has a different set of anecdotes! We had sleeptime issues as well as a number of our friends. We did a gradual approach where we sat in a chair nearby the bed, then gradually moved the chair away, over about a week. Everything was fine after that.
I'm not sure if you're arguing for or against it, but for those who don't know, this is at its core sleep training. It doesn't require a parent to just throw their child into a crib, slam the door, and put in ear plugs. Anyone who ignores the needs of their child is cruel. That said, sometimes a child's needs are met and they just need to learn to go to sleep without someone patting their back.