Most of us already knew that getting a Ph.D. could hurt our chances of employment. I think the shock and anger expressed in many of these responses comes from realizing how complicit the institutions are in grad students' exploitation. Graduate schools create the Ph.D. unemployment problem by shifting an increasing teaching load onto graduate students and other peons.
Universities give lip service to liberal ideals as they surpass other industries in abuse of labor.
TAs are made, cynically, to work against themselves, providing the cheap labor that ensures they will never be hired for real. Universities have become the most antidemocratic, classist institutions around. This is also reflected in the decay of freedom of inquiry under the gerontocratic tenure system. In a system where most employees have a reasonable expectation of tenure, the lower class of workers can afford to tell the truth. When the majority of workers can reasonably fear for their job security on the basis of opinions and beliefs, the universities breed not only oppression but dishonesty.