It is because they don't need the community's help. They have a huge kernel team, and do all their own backporting. The RHEL 5.14 kernel is quite different from

It is because they don't need the community's help. They have a huge kernel team, and do all their own backporting. The RHEL 5.14 kernel is quite different from the vanilla 5.14 kernel, making the community's help not that useful.