This supposedly humourous video, seems to me to be talking to one stereotype but is actually just offering up another one.
What I find also problematic is that the librarian gives reference answers but doesn’t check them first. It’s all very well having a good general knowledge and being able to answer queries, but really it is a responsibility to check your facts with another source before giving the library user your answer. I did reference for a number of years and would just provide the answer, but one day in 1997 I confused Tagalog with Bahasa and gave the WRONG answer to a query, because I didn’t check – NEVER AGAIN.