we have the same situation at my uni BUT the whole uni hate his lectures even tho his lectures are fundamental ( 3 to 5 students avg attendance out of 130), he is objectively a great professor with really good character, his colleagues (other profs) really respect him, but students don't... i can understand what he is saying because i have a severe stutter myself, others don't like him. it's fucked up really, it makes me sad.