Good for the professor.
I think she is silly. I personally agree with her, but if the students are used to taking notes like that, then why deny them that? My husband is a professor and has learned not to do these stupid things when it aggrevates students. Many teachers ban cell phones, but he has a lot of adults with children taking his classes and doesn't want to deny them that. So he uses humor. When someone's cell phone goes off, he begins to dance to the music; it embarasses the students. Another teacher there has the student sing to the music for the class. You can do little things so that students get the idea. If these students think this is so important, let them do it.