These things are essentially the opposite of one another. Bellard's project is a PC emulator in JavaScript. Compiling things to wasm is pretty trivial now, but jslinux was much more impressive when it came out. It actually still is, for reasons you can see in the technical notes: https://bellard.org/jslinux/tech.html

This project, on the other hand, is the opposite (and kind of a joke): a set of Linux utilities mostly written in JavaScript.