The fact is that package management on Linux is fundamentally

Question

The fact is that package management on Linux is fundamentally

broken. Because packages depend on other packages of a certain version and a certain kernel.

So what do you do?
* You keep the entire system up to date so you can just use packages, but that implies using a base that can be unstable, untested and unreliable by using a rolling distribution
* You freeze packages back in time and slow down their rollout, so everything works together quite nicely at the cost of having old versions of things (every other distro). There are even then various degrees of stability, but sadly on proper solid stuff like LTS versions or Debian Stable o CentOS, having a Stable base tested thoroughly comes at the price of outdated user applications, that might have received critical bug fixes.

If you want to run a stable system with rolling user applications, containers such as Flatpak that self-contain everything are the way to go. Especially because things like GTK dependencies tend to go crazy, it's way less of a hassle to just bundle it

And even then, idk in Snap (I don't really like Snap's approach), but in Flatpak you can still have shared libraries and binaries in your Flatpak installation. Yes, you may have 2 copies of the KDE frameworks or whataver, but at least not 1 for every app you install.