Indeed! Librarians are often very highly educated, the couple I know have masters degrees. If you need something, no matter how obscure, you can ask a librarian, they will know how to get it for you.
I was disagreeing that public libraries cater to only the lowly forms of society (homeless and children) and don't require educated librarians. They do more than babysit and they employ such librarians. They also employ, for example, teenagers to stock shelves.
They also employee the advanced degree educated professional librarians you are talking about too.