Arch is often pictured as some Uber hacker magic which it isn't. It is a useful collection of software packages with great documentation.

Arch is for example useful if you want to program with new Rust versions, tools like jujutsu, cross-compile for your Sailfish phone, and so on.

(By the way, Guix features now a recent Rust/cargo version, too!)

And both Debian and Arch have advantages / disadvantages, so both are useful for different tasks. Learning Arch is really not a big step or costs much time if you know the foundations of Linux.