Yes, I get the impression it only runs on Linux? And we're supposed to infer that by the fact that it's "distro-agnostic" and sometimes the word Free is capitalized in the middle of a sentence. Because if you're in the right place, you're already running a Free OS.
A quick packaging for windows and Mac could let non technical folks wanting to edit video easily adopt something like this.
Maybe in the meantime a quick how-to install a virtual machine and edit within.