I think you're being disingenuous. RHEL6 is 2.6.32-based. So it seems reasonable for maintainers of other distros based on 2.6.32 (like Maximilian for Debian, or GregKH for upstream-stable) to want be able to check RedHat's kernel source for patches which might be applicable to their kernels as well.
RedHat of course doesn't need to themselves backport fixes to other people's kernels (including 2.6.32-stable)...now, ideally, they *would* also participate in upstream stable branch maintenance themselves for whatever kernel they've based on (everyone else seems to be doing so...), but, it's okay if they don't. However, it's *not fine* to intentionally make it difficult for others to do that work. That's incredibly lame.