I think the parent comment was alluding to the fact that RedHat has the ability to manufacture consensus. All the distributions use systemd (and pulseaudio and ...) because GNOME and other core components were modified to work only with systemd. So everyone agreed to use RedHat's way because there was no other way. No matter how good RH's creations might be, that's the kind of tail-wagging-the-dog power that is bad for an ecosystem.