The list is publicly archived, but glibc's maintainer (Ulrich Drepper) actively discourages public interaction for the project. The project's policy is that bug reports should almost always go through a Linux distribution, and to say it nicely, Drepper can be difficult to persuade.

Debian was in the process of switching to eglibc in order to avoid glibc (and Drepper), and fix issues they saw with the library.