[Fedora-packaging] glibc-devel (or libstdc++-devel) not BuildRequires exceptions?

[Rex Dieter]

Was about to comment on a review that
BuildRequires: glibc-devel
isn't needed and was in the list of exceptions, and was to link the list
http://fedoraproject.org/wiki/Packaging/Guidelines#Exceptions_2
only to discover it indeed is not there.  

Shouldn't it be?  

A Similar argument could probably be made for libstdc++-devel

-- rex