It's interesting how Russian linux distributions aren't using Flatpak or immutable stuff, which, if I am correct to assume that, is just because they haven't developed enough of the ecosystem to start noticing they need it. Basically the only people needing their distros are organizations who can and will stick to just one distro they are paying for, while all the software is made to either work on just one of those distros, or on most of linux distros that are similar to debian and fedora, with no much in-between.