I tend to be suspicious of this kind of move, where what seems like a character flaw is explained away as something more benign. In the article in question, the author suggests that the woman writing in is not really lazy, but has been holding back out of fear that she might disappoint herself. But why can't she just be lazy? I don't doubt that there are people who have the kind of subtle psychology that the author suggests. But I wonder if we're too eager to accept such explanations because they are more comforting than more straightforward, harsher ones.