You know what I also hate? When professors take your phone while in class. I had a professor that did that back in my days of gender studies college and he saw nudes of my they/them girlfriend at the time. Mannn it was an awkward rest of the class and he didn't tell anyone, but I really showed him, ended up taking the day off next day and nailed his wife. Dude never found out or anything, turns out her wife has had countless orgies with several other guys while he's busy at school teaching students. Still never confirmed whether he found out or not.
Overall, lost my train of thought, in response to your comment they do it to be sure you have the most recent information in the book, don't see an issue tbh.