Containers fix a problem that unix has solved for decades.

https://en.wikipedia.org/wiki/Soname

The problem is the package managers used by most distros getting hung up on there only being a single version number of each package name installed at any one time.

Sort that out, like say how Gobolinux does it, and you do not need containers.

But containers is all the rage on the web these days, so ipso facto is also must be all the rage for desktop Linux.

Back before Gnome and Freedesktop, desktop Linux was a kernel up project. But more and more these days however it is a web down.

Meaning that web people get interested in using the L in LAMP on their desktops, start looking into Gnome/KDE, then get involved in Freedesktop plumbing, and all the while bring their web-isms ("move fast and break stuff" being the most annoying) with them further down the stack.