Why is statically linking glibc discouraged?

Question

Most of the sources online state that you can statically link glibc, but discourage from doing so; e.g. centos package repo:

The glibc-static package contain         


        

Answer 1

Bug fixes in glibc aren't included in a statically linked application when you upgrade glibc unless you rebuild the application.

Also, NSS (Name Service Switch) doesn't work unless you use dynamic linking.