

I am wondering the same, mentioning the specific hardware makes very little sense, when it could just be mentioned as Linux/Windows/PC and Android/GrapheneOS/etc.
It would arguably be more informative too for people looking for alternatives for their device platforms.
MATE has been on most of my machines, except the BSD ones.
But past year or so, I have grown a fondness towards ctwm, and gradually migrated my machines to it, Linux and BSD alike.
It is not a DE, but the fact that I have to assemble my suite of software myself on my machines, makes the point of using DEs moot.