If you mean the library of Congress sure. If you mean the most libraries not based on a quick google (https://www.quora.com/Which-country-in-the-world-has-the-mos...). But I guess it depends on what you mean. I am genuinely curious as there are several ways of looking at this.

Also, the person above could have been talking about compared to days past. I can tell you the libraries I had access to when and where I grew are less funded (many closed), but again depends on where and what you’re comparing against.