As per https://blog.gtk.org/2024/01/28/new-renderers-for-gtk/ and https://www.phoronix.com/news/GTK-4.16-Released :

You can still use either a new OpenGL renderer or the old OpenGL renderer. This can be set with the GSK_RENDERER environment variable (e.g. GSK_RENDERER=gl)

I would assume it will also probably detect unsupported hardware and switch to OpenGL automatically but I don’t have any source to back this up.

This email explains it in detail: http://lists.busybox.net/pipermail/busybox/2010-December/074114.html

TLDR: /usr stands for user

/srv stands probably for serve as in serving static files like static websites. (Source)

More information here: https://refspecs.linuxfoundation.org/FHS_3.0/fhs/index.html

The extension is probably not broken because of Firefox but because Flatpak’s sandboxing prevents it from talking to KeePassXC.

Nice

Psyonix ended Mac and Linux support but you can still play Rocket League (the Windows version) on Linux via Proton (a compatibility layer that translates Windows specific calls to their Linux equivalents). You can even run BakkesMod alongside it.

I suggest you read the original review the article is refering to. It’s more detailed and very well.l written.