Generated via ublue's countme script https://github.com/ublue-os/countme/blob/main/growth_global.svg
Here is Fedora's upstream graph to compare:
Distrobox seems to be a container... I wonder how well that works with applications following system themes and being able to be seen in app launchers.
Its interesting but my experience is that usually you do get some issues with solutions where apps are not native.