The real question is, when will this joke finally get old? Like is it really still funny to make joke after literally every thread about SystemD has made this joke for 10+ years.
You seem to mix up 'applicable' and 'funny'. Jokes are supposed to be funny. And given that there is already a OS part of the project, the joke doesn't even make fucking sense anymore.
Excellent super slept on distro using excellent super slept on distro assembly tools also homed in the systemd cinematic universe, mkosi, https://github.com/systemd/mkosi
I mean. It doesn't use RPMs (directly), but systemd-sysupdate and systemd-sysext do cover that ground. Though the vision seems to be somewhat coarser than traditional packages.