Distrowatch ranking is just the distros that are more commonly searched on the site. The FAQ says “The page Hit Ranking represents hits per day by unique visitors”. It’s just an attempt to see what’s more popular among visitors.

Yeah, maybe there is a feedback loop where people will click on the top one just to see why it is on top, and in doing so they give the clicks necessary to remain on the top.

Jarro Negro. Made by Mexican students. And as far as I know, it’s independent, not based on another distro.

One day on my main Arch installation I created a container inside a directory, and “booted” into it by using systemd-nspawn. When I was done with it I decided to do a rm -rf / inside the container just to be funny. Then I noticed that my DE on the host froze and I couldn’t do anything. Then I realized that systemd-nspawn mounts some important host’s directories on the container, and I deleted those when I did the rm -rf /. I didn’t lose anything, but it was scary.