I can't understand what you're talking about, I'm looking through the list of specifications and I don't see anything specific to Red Hat or systemd. I also see a lot of other names besides Red Hat people: https://specifications.freedesktop.org/

If Red Hat engineers submit something there it's because they think it's useful to the other desktop projects. It's just a collaborative space to put specs. If you have a spec of your own you can just create a new RFC. You don't need to persuade them to change how they design theirs, unless you intend to start working at Red Hat and start maintaining some of their software for them.