IMO this isn't part of your OS; it's cross-platform PC software. Install it using the bin its creators have provided. They have even built and are hosting a Deb for your linux distro (From inspection of the script)
The concept is called a "package manager" and it greatly helps me achieve a concept called "reproducible builds", as I gradually migrate the work toward a package manager for reproducible builds called "Nix".
https://en.wikipedia.org/wiki/Package_manager
I recognize that a lot of Linux users like the package system. I think it's a great tool for software that's intended to be integrated with the OS, but is a bit of a mismatch for third-party software. The creators here have even build a .deb, which is above and beyond. (Compared to, for exmple, compiling a +x linux executable that has been tested on Debian)
So, from a writer and user of software, I think I would rather publish the executables or a script to install them on my website (as they have done) for all the major OS branches, and as a user, I think c+ping and launching the CLI command they provided front and center is fantastic. It's an above-avg experience; a trivial install process, which isn't a given for OSS.