One of the things that distresses many municipal librarians is that the general image of their role is so outdated. It is a little like education in that many people seem to feel that the way they remember things working in their childhood is the only "real" way in which they can work. In fact, like anything else, libraries evolve all the time. It is quite possible that modern technological developments are making them change faster now than they have for decades, but some kind of change is inherent in any living service.
An idea of how extensive these changes can be can be found on this website. Some of it is about good architectural practice; some the impact of radio frequency identification technology (RFID), 3D printing, ereaders of various kinds and so on.
The frustrating thing is that the political debate really just hasn't caught up with any of this at all.