As far as I was aware AMDGPU is used by default on most if not all distros

I really don't think that's the case, assuming you're talking about AMDVLK (amdgpu is the kernel module used by all three Vulkan drivers - RADV, AMDVLK and the Vulkan driver from AMDGPU-PRO). Ubuntu and Fedora definitely default to RADV, and Arch Wiki recommends RADV unless you need something from the other drivers.

I noticed a performance increase after forcing RADV on NixOS so not really sure.

NixOS seems to default to RADV according to their Wiki. If this was a few years ago then maybe you might be confusing it with the ACO shader compiler for RADV? That brought a significant performance increase and eventually became the default in RADV. I remember using custom Mesa (the project that develops open source graphics drivers, like RADV and radeonsi) builds to massively reduce stuttering in DirectX games.

I personally chose RADV after looking into this myself and the only drawback from my understanding is that they are proprietary drivers.

RADV is the open-source community developed Vulkan driver. It has the widest hardware support of the three Vulkan drivers and is generally the best for gaming.

AMD provides two more Vulkan drivers - AMDVLK is the open-source one available in AMDGPU, then there's the unnamed proprietary Vulkan driver in AMDGPU-PRO. The biggest advantage of the proprietary one is that it is certified - doesn't matter most of the time, but when it does, a missing certification is a deal breaker.

While I agree with your view (at least when it comes to firmware, especially given that hardware that doesn't require a firmware upload on boot generally just has the very same proprietary firmware on a built-in memory, so the only difference is that you don't get to even touch the software running on it), the point of this project is to remove non-libre components from coreboot/libreboot.

It doesn't differentiate itself from upstream in any other way, so if it fails to do the one thing it was made to do, then that's in fact a newsworthy fact.

I can't speak for these specific laptops, but unlike x86, ARM generally doesn't have a way for an OS to discover the available hardware, and most ARM platforms historically didn't do anything to help. There is a standard for UEFI on ARM where the UEFI is supposed to tell the OS about the hardware, but as far as I know this is only a thing on ARM servers and these laptops might not support it.

Without any way of probing for hardware or getting the information from UEFI, Linux has to somehow be compiled with all the info about the hardware built-in. And the build will be model-specific (there's a way to pass a file describing the hardware to Linux from the bootloader which enables a single kernel to be used on multiple models and have just a small part of the bootloader be model-specific, but somebody still needs to make that file and the manufacturers clearly don't intend to do that).

proprietary Google-only format

Keyhole Markup Language

KML became an international standard of the Open Geospatial Consortium in 2008.

(...)

The KML 2.2 specification was submitted to the Open Geospatial Consortium to assure its status as an open standard for all geobrowsers.

How much Doritos dust are you willing to inhale?

By taking away the MicroSD slot to force users towards expensive cloud storage?

You can now turn on the “autoscrolling” feature of the Libinput driver, which lets you scroll on any scrollable view by holding down the middle button of your mouse and moving the whole mouse

Am I crazy, or did this used to be a feature? And not just in Firefox

It's a Windows feature that never really made it to Linux. I used to miss it but honestly, middle click paste feels way more useful to me now

If it is an Arch-based distro (sorry, I don't recognize the package manager), then this might just be the recent Wine update that made it 700 MB smaller (which would mean the rest of your system grew 300 MB)

I made a post here about it: this one

Btw, is there a way to link to a post in a way that resolves on everyone's separate instance instead of hard coding it to my instance?

Does UEFI initialize all the cores? I know the OS always starts with only one core available, but I'm not sure if UEFI just disables the cores after it's done its thing, or if it doesn't touch them. Because if it stays on core 0 and never even brings the other ones up, then this issue with core 2 could let it boot this far just fine.

From this point of view is systemd disaster because it is almost everywhere in the system - boot, network, logs, dns, user/home management…

That's almost like complaining that GNU coreutils is a disaster from KISS point of view because it includes too many things in a single project - cat, grep, dd, chown, touch, sync, base64, date, env... Not quite, because coreutils is actually a single package unlike systemd.

The core systemd is big (IMHO it needs to be in order to provide good service management, and service management is a reasonable thing to include in systemd), but everything you listed are optional components. If your distro bundles them into one package, that's on them.