These are somewhat similar:

• He could have provided more positive feedback. Yes, I want to know what I need to change. But I also want to know what I'm doing correctly. What am I doing a good job at with my assignments so I can keep doing those things? Positive feedback on assignments would be appreciated. It's helpful to know what you're doing RIGHT. I'm used to having my [online college] professors give stellar positive and encouraging feedback on assignments [read: 99s and 100s all the time for work that wasn't 99 or 100 quality]. This class was an utter shock. (If you don't get critiqued on it, you don't need to change it. I don't want or need you to fix things that you already do correctly. I'd rather put my efforts [and direct yours] into getting you to improve as a student and a writer.)
• There are good professors... that will encourage [students] to be the best they can be and work with them to achieve the academic goals they set for themselves...Unfortunately, professor Arnold is not one of these professors. If you would like to contact me further regarding my experiences in this class, my email is [redacted]@gmail.com.  (At the time I received this comment, I had been teaching for over 17 years and could count on one hand the number of students that didn't pass my course that turned in all of their assignments. Unfortunately, all the professors that "encouraged" this student to "be the best they can be" and helped her "to achieve the academic goals [she] set" for herself didn't protect this student from the realities that sometimes [most times in the real world] one has to work toward goals set for you by someone else. [Yes, this was supposed to be an anonymous survey].)
• ...work load was often a lot especially when the majority of the students were only taking this to get into their major not for their major. (This is why in many classes I offer a "high B" option. Do less work but have massive slop on getting a B. I appreciate that my class might not be your definition of "important," but do your best and work your hardest. What do you have to lose?)
• For sure the hardest college course I have ever taken and would not recommended to ANYONE not even if they were looking for a challenge. ( I'm not sure if someone was looking for a challenge that this is the type of student they would look to for recommendations of that nature? ;) )
• Some more "jeers" here.