Clearly I was dicussing university libraries.
Then you should know librarians don't shelve books. That is a job for library assistants and in a university library, usually a job for work-study students w/minimal training.
If you needed subject matter expertise for research, you would not ask the book shelver, you would ask a librarian, who often has 2 masters degrees, one in the subject matter, one in library and information science. Perhaps you have not had the need for high level research assistance using a qualified information professional.
Your rant seemed so "clearly" ignorant of what librarians know and do, I was sure it wasn't limited to academic librarians.