this never happened before, it’s also not happening ion my backup computer (same OS, xubuntu 24.04).
Message: get more security updates through ubuntu pro with esm-apps enabled, learn more about ubuntu pro <url here>
How do I get rid of it.
Ubuntu never advertised itself so blatantly.
No. You are using a stable Distro. This is how stable distros work.
If you want upstream updates for all packages, use a rolling or semi-rolling release like Fedora, Arch, OpenSUSE, Gentoo, etc.
But Debian does get security updates backported, right? Like, is Ubuntu actively preventing you from getting these?
I dont know how many packages they share but this seems very unrealistic.
Debian and Ubuntu have different release schedukes and package versions.
True. But Debian Testing and Unstable do exist. Which should be primary candidates for where Ubuntu gets their packages.