As an old fart, I'm happy to see that Debian is still cool. All of this arch-manjaro-nix-os-awesome-bspwm-i3-xmonad-flatsnap whippersnapper stuff is over my head.
Realistically, it doesn't make sense for folks to be using bleeding edge distros like Arch for a server anyway. LTS of Debian or even Ubuntu are definitely the right answer
Back when I was hyper into Arch I used it for my servers. "Why not make it the same as your development environment?". Anyways, that immediately stops working when your development environment changes. For a server, just use Debian or Ubuntu.
I'm all for using Debian and such, and I think out of all the new and hip things people brag about, using Flatpak is the most useful thing for the average user experience and worth checking out. Everything (almost) else is just extra.