[John Cena 141] Is the setup really needed with Johncena141 repacks? How to setup them on immutable distro like bluefin?

So the setup for those repacks is described here: https://gitlab.com/jc141x/setup/-/tree/main

Is it really needed? I couldn't find any information about that except for here: https://github.com/AbdelrhmanNile/UnderTaker141

I use bluefin (very similar to bazzite, if something works there, it should work here), how to install those packages?