I agree libraries are great when dealing with very specific domain problems (who wants to hand-roll a datetime module?). But there are also a ton of libraries that aren't for such specific domains or which attempt to bridge multiple domains (i.e. frameworks).
The argument made by functional languages like Clojure is that by making heavy use of pure function composition, you don't actually need a million libraries to build large/complex systems. You can do it with a much smaller number of libraries where necessary and take advantage of the language's natural extensibility for the rest.
The argument made by functional languages like Clojure is that by making heavy use of pure function composition, you don't actually need a million libraries to build large/complex systems. You can do it with a much smaller number of libraries where necessary and take advantage of the language's natural extensibility for the rest.