Debian Unstable (often called Sid) is a branch of the Debian operating system designed for active development of new versions of packages. It is considered the most recent, but also the most unstable of the three main branches of Debian. Other software comes with Oldversion and runs under Wine. Xfce Desktop Environments
Without context, the image isn’t that impressive. If nothing XP-related actually works and it’s just a display exercise, it’s just a 20-something year old skin import.
If absolutely everything works in the manner XP worked, then it’s incredibly impressive.
I do find recreating the whole theme of XP pretty impressive, it must have taken a lot more than just a “skin import”.
So, a BSOD? Or a Zip Drive ‘click of death’?
I use a Windows XP computer (for distraction-free writing using old DOS word processors) and a bunch of Linux and Windows 11 PCs. Being in contact with XP regularly, I don’t experience any desire to go back to doing things like that. It’s really rough compared to modern Linux.