Well it’s a discussion in bad taste. I don’t really know how to explain more because this should be obvious already why people wouldn’t like seeing it.
I can present a report on an extremely low LTIFR right after a workplace fatality and watch as I never get to present data in that room again.
Turning around and saying “but it’s factual!” isn’t going to get a “you’re right. Good job mate”
Ublue will happily include media codecs, nvidia drivers, ootb hardware acceleration… the things you would likely do with a Fedora image - but Fedora can’t or won’t include by default due to strict guidelines on their project or legal concerns.
Side other niceties like ublue includes distrobox, which is commonly used in other immutable distros, but Fedora don’t include it.
It’s basically overcoming Fedora’s limitations as a starting point. And It’s not downstream, it’s more alongside Fedora, you’re essentially running Fedora with ublue’s optimisations plugged in. When Fedora’s updates come through, you’ve got them.
And here’s the mission statement https://universal-blue.org/mission.html