There's a difference between source available and open source. For example, actually being allowed to distribute modified versions is pretty damn important:

Restrictions

• No Distribution of Modified Versions: You may not distribute modified versions of the software, whether in source or binary form.
• No Forking: You may not create, maintain, or distribute a forked version of the software.
• Official Distribution: Only the maintainers of the official repository are allowed to distribute the software and its modifications.

The MSYS2 environment on Windows uses pacman as well.

All the core tools are actually a single executable with many symlinks to it, which makes the distro very compact. This makes it very nice as a base for Docker images.

https://en.m.wikipedia.org/wiki/BusyBox

Yes, but that's bound to be merged quickly, the protocol itself was the main holdup from what I understand.

Nouveau should have already been fine, this should fix the proprietary driver's issues. AFAIK this is a core issue of the proprietary driver, so should affect all cards.

I tried Wayland on my 16xx series GPU, Electron apps were only annoying, but games were unplayable. The desktop itself and Wayland native apps worked fine, though.

Well, this is the root cause of this specific issue if you treat nvidia's part of the stack as some barely changable black box (which is what it is right now). It's not that I disagree open source drivers would be better, I just already own an nvidia GPU :/

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SELinux is a pain on Arch, it actually working nicely could be viewed as Fedora's killer feature.

https://wiki.archlinux.org/title/SELinux

Was very short on Arch :(

Rust: works

Zig: segmentation fault

Revolut

The open source licences of Linux and the BSDs allow verbatim copying. That's kind of the point of OSS.

In fact, Mac OS is a verbatim copy of a BSD.