I agree with the sentiment for libraries that provide particular computations like parsers for a particular data format. What about libraries like Gtk, though?

I agree with the sentiment for libraries that provide particular computations like parsers for a particular data format. What about libraries like Gtk, though? Should third-party apps bundle their own Gtk and interface with the system only on the X/Wayland + ATK layers? What about glibc? Occasionally (getrandom()!) there's new glibc surface that apps really should adopt. Should apps just rely on the Linux syscall interface directly and bypass glibc?