Debian has its own kernel, and security team, in fact as Ubuntu is downstream of Debian they get the full benefit of Debian’s security patches (yes Canonical maintains their own kernel, but the vast majority of other packages are pulled from Debian’s repositories), fwupd isn’t unique to Ubuntu, KDE has been combining update managers into Discover for ages, not everybody likes Gnome.
You’re saying “replicate” like these are all things Ubuntu did first and everyone else is copying them. That’s ignorant at best and disingenuous at worst.