Ubuntu maintains it's own package library which is far newer then Debians but less tested/stable. Debian only releases new version when it's team feels their ready. However Debian does keep up to date with security patches
If you would like a distro that keeps itself up to date try out Fedora, it's updated every 6 months and has been super popular lately
Note that if you use flatpacks they will be up to date no matter what distro you choose, making Debian a very stable option while still getting new features in applications
Edit: edited to answer the question more clearly
I would not claim that Ubuntu is anything but stable. We run a bunch of Ubuntu lts servers at work and there’s hardly any issues. Found a 16.x the other day with over 500 days uptime driving signage. That was desktop version.
I use Debian because of the OSS focus, and stability. And because I know the distro fairly well. They’re conservative in choice of tools and for instance only went full systemd a few years back (5?)
I don’t mind systemd but I don’t mind sysv init either. Even slackwares scripts worked fine. If it’s not broken don’t fix it.
However Debian does keep up to date with security patches
Only if you use the stable version. Debian has a security team that handles quickly uploading patched versions of Debian packages, but only for stable. Debian testing and unstable aren't handled by the security team and instead require the package maintainers to upload security updates (which can lag behind)
Ubuntu maintains it's own package library which is far newer then Debians but less tested/stable. Debian only releases new version when it's team feels their ready. However Debian does keep up to date with security patches
If you would like a distro that keeps itself up to date try out Fedora, it's updated every 6 months and has been super popular lately
Note that if you use flatpacks they will be up to date no matter what distro you choose, making Debian a very stable option while still getting new features in applications
Edit: edited to answer the question more clearly
I would not claim that Ubuntu is anything but stable. We run a bunch of Ubuntu lts servers at work and there’s hardly any issues. Found a 16.x the other day with over 500 days uptime driving signage. That was desktop version.
I use Debian because of the OSS focus, and stability. And because I know the distro fairly well. They’re conservative in choice of tools and for instance only went full systemd a few years back (5?)
I don’t mind systemd but I don’t mind sysv init either. Even slackwares scripts worked fine. If it’s not broken don’t fix it.
Only if you use the stable version. Debian has a security team that handles quickly uploading patched versions of Debian packages, but only for stable. Debian testing and unstable aren't handled by the security team and instead require the package maintainers to upload security updates (which can lag behind)