It’s not just noobs that appreciate flatpak. Flatpak is good all-round.
And the problem of Debian packages being old is very much not imaginary lol. Debian has only just moved beyond Gnome 3.38/Plasma 5.20/kernel version 5.10.
That’s ancient. And that’s not to mention the other software repos, which are often updated at an even slower pace.
Don’t assume that just because you want extremely outdated packages, everyone else must want the same.