And yes, this sentiment is not uncommon in most research institutions.
Many graduate students direct their frustration with the program at their committee.
Some lose confidence in themselves and it takes a long while, even after being gainfully employed, to regain a sense of self. In addition to having students meet with other professors, there should be a non-partisan Graduate Advisor for the department who will be able to answer questions for graduate students. Professors need to know when to let go of students and give students their private space. Being supportive of our students means not discussing students with other students. What is most unfortunate is that many graduates who become employed in academe continue to perpetuate such relationships for various reasons.