But why rewrite programs that existed for decades and have proven their stability and safety? Rewriting them to Rust won’t make them safer, it will just introduce the kind of issues original versions have got fixed long ago.

The uutils author knows this. His motivation was performance. It’s easier to write fast code in Rust for him.

The fact uutils are being shipped despite being so raw shows that this is not about better software. The whole project is about abolishing GPL. And Rust is just an excuse.

You are mashing two things into one.

1. uutils is just making Open Source software.
2. Canonical ships it despite the project being so raw.

uutils don’t have any rights to tell Canonical if and when can the software be incorporated into Ubuntu.

You linked the right definition but you are wrong. MIT is a Free Software license.

https://www.gnu.org/licenses/license-list.html#Expat

Open Source and Free Software are just two different philosophies – the licenses are the same. A Free Software license also works as an Open Source license and vice versa.

Musl is the real reason why one would choose Void over Alpine. Glibc allocator is faster and the glibc just has better software compatibility.

Spiral Linux is just a custom installer for normal Debian with some repos added for automatic snapshots. It’s not rolling release.

It’s Arch Linux done wrong. Arch tries to give you the latest software, Void intentionally does not.

That hybernation is really easy to setup. You just need a swap partition or logical volume. This one has not been mentioned yet.