I agree they have no obligation to _support_ people to repackage their code and redistribute it, but they do have an obligation to _allow_ people to repackage their code and redistribute it.
this obligation is based on the fact that most of 'their code' is not actually theirs, it's code from other people who let them use it on the condition that they let others use it (and derived works) as well.
RedHat has traditionally made it easy for people to make rebranded distros by keeping all their branding fairly nicely isolated.
they would be perfectly within their rights to stop doing so, no longer provide broken out patches for anything, and start including trademarked logos embedded in the source files to make it harder for people to strip the trademarked branding out.
and there may even be technical arguments for doing exactly this in the final build code version (and no, I don't buy the argument that a series of patches is the "preferred means of modification" patches aren't edited by humans, they are a way of transmitting changes from one entity to another).
If that is what they were doing, I would be silent, or supporting their right to do so (while not necessarily agreeing that it's a good idea to do so)