Librarians go to school to learn how to manage information, whether it is in book format or otherwise. (We tend to think of libraries as places with books because, for so much of human history, that's how information was stored.)
They are not supposed to have more information in their heads, they are supposed to know how to find (source) information, catalogue and categorize it, identify good information from bad information, good information sources from bad ones, and teach others how to do so as well.
I don't believe nothing will change. I do believe Musk will capture communications and use it to monitor people he believes are his biggest enemies, then use it to best-case blackmail them, worst-case have them arrested in trumped-up (no pun intended) charges.
Random unknown people are being kidnapped, tortured, and sold internationally as slaves by the government. These are the cases we know about because they are getting to the media. How many are not getting through the Right-supporting media? Do we really think actual opponents aren't just waiting targets?