Or, stick to the policy?

I think the issue highlights the issue with distributions wanting to treat themselves as separate projects from upstream processes and the problems it causes. Namely the confusion and issues that occur for end users when distributions make substantial changes to software.

If the changes they created caused the bug then the distribution is the correct place to file the bug. But if the bug is present in the upstream software then the bug report should be filed there. However end users are often the people least equipped with the prerequisite information necessary to make that sort of judgement, yet it is considered their duty to be the ones to file the bugs with useful and relevant information in the first place.

Which then makes it necessary to have somebody on the distribution level to triage the bugs and make the decisions on behalf of the users on where the bug ultimately gets sent to. They are the only ones that reliably decide if a bug is something they created or upstream created.

HOWEVER... if the distribution works very closely with upstream then that process is likely inappropriate.

IF Fedora closely aligns it's release, configuration, and development process of its Gnome desktop with the Gnome project itself then that process can be treated as a extension of the upstream Gnome project. Essentially the Fedora Gnome maintainers should, ideally, be volunteers as part of Gnome project itself. Be the experts in how Gnome should be packaged for RPM OSes and have their packaging effort be a sort of extension of the Gnome project itself rather then just solely part of the Fedora project. They then can collaborate with other distributions that consume Gnome in RPM format and if possible have those maintainers participate in the same vein. Should, ideally, reduce complexity and duplication of effort.

IF Gnome is accepting of all of this, of course.

And in that situation filing the bugs directly upstream is the most appropriate thing for end users because it will go to both groups (rpm maintainers and gnome) at the same time. It is simple, easy to understand, and avoids mistakes. At that point trying to force the triaging of bugs on the distribution level is just adding bureaucratic complexity for bureaucratic complexity's sake.