There have been an influx of them in my RSS feeds, I wonder if there's been a You Tube or Tick Tock video that went viral about Nix some time earlier.

I'm not the author, but I agree it feels nice on mobile, and the dark and light mode is a nice touch. I think it takes a hint from the browser system settings too.

I really appreciate the comma command.

Agreed, much prefer running apps via nix. Although I did have to fall back to flatpak install the bottles, but that is a bit of a special case where the software explicitly requires itself to be sandboxed or behaves less as expected otherwise.

I only have 3 installs of NixOS already, two for work (a server and laptop), and a third for a personal use (desktop). I largely started out by copying a public config from the community. Now I just copy a few kilobytes between the three from time to time via git repo to keep all my kernels, kernel modules, patches, net config, package versions, and system users/groups permissions in sync via lock files. And my user dot files too, but you don't need nix for that last one.

If I have to do something multiple times, like copying a distro across even a few systems more than once, then I figured I'd just revision control it via lockfiles like any other software project.

That all said, NixOS is a hell of a rabbit hole; great for lazy admins and hobby tinkering alike:

https://xkcd.com/1319/

The top graph reflects my stable work install for robot software development,
but the bottom graph is my personal install for hobbies and home lab.

The article veers off about Flox, but I'm unsure what Flox adds over stock Nix?