Earlier quoted context omitted.
What I got from his post wasn't that he deserved a better grade, but more willingness by the professor to field his questions. If other students felt this way, I really can't trust the author's claim that his low evaluation score was solely due to the fault of his students. Seems pretty unfair... The cheating, although not excusable, could very well be partially blamed on the professor.
I don't understand some of the negative responses directed to the professor (both in this case and in others; they seem to represent a popular sentiment). Why isn't blaming professors for cheaters analogous to blaming rape victims for being insufficiently vigilant against rape?
I don't think the analogy holds well. The point is that a professor is supposed to help his/her students when they have questions. If they don't do this, they increase the probability of cheating occurring. It's less of "blaming" and more "noting" that this happens. If the professor is partially ignoring this duty, he/she is partly to blame. (I'm not saying that happened here, just explaining what I think @reason's logic is).