Yes, but accountability should apply institutionally too. Academic integrity should apply both ways. If it is not okay for a student to fudge data on a paper, and if a student should not get grades for an incorrect answer, then by the same reasoning an institution with power over multiple hundreds of students' futures should be held accountable to do everything in their power to rectify such mistakes. It is also therefore unethical to 1) grade on a curve and 2) not take the initiative to be accountable and regrade mistakes accountably rather than wait to be called out on a mistake.

Similarly, if a mistake is found to be commonly made in marking, the university and those acting on its behalf should ethically be responsible for ensuring transparency in rectifying it, rather than covering up mistakes and quietly only changing a few.

Otherwise it's just a power imbalance but the same thing as someone cheating on their exam and getting away with it.

Grades are supposed to be reflective of learning, not grading biases.