AG,
There was an op-ed in this past Sunday's NY Times about this very article. husband pointed it out to me, because my particular style is very much like the father who wrote the letter, while husband's is very diplomatic (aka avoidance-driven). The NY Times piece indicated that while it may all be true, and that the dad was right to be disappointed, that letter, however, was not a display of good parenting. Apparently, pointing out negatives and failures doesn't do one darn thing to bring out positive change in a person. If you read between the lines of the letter, the dad references that his (adult) kids always complain about their problems, but never heed any advice given by the mom or the dad. The psychologist critiquing the letter in the Times pointed out that to do so now, would also be out of character for the children.
All I know is this man did not publish the letter - it was sent privately to his 3 kids. It was harsh, but necessarily so because there are grandchildren involved. in my opinion the dad was also trying to protect his wife from further anxiety caused by her grown children. I'm with the dad on this one, 100 percent. He was civil, not abusive, but direct. Only sad thing is, he was too late - it didn't make one bit of difference.
And I disagree with the psychologist about pointing out negatives in the hopes of expecting a change of behavior. When you work and get a yearly review, if you've not hit all your goals, etc., doesn't your manager clearly state negatives and the expectation that things should be corrected? Aren't you expected to change or risk getting fired? I guess it's human nature to love praise and hate criticism, but I think the pendulum has swung too far.