It peaked at 4.05% in March. The last 2 months it went just below 4% as the Unknown category increased. For June the reverse happened, so 4.04% seems to be the real current share of Linux on Desktop as desktop clients were read properly/werent spoofed.
Desktop is a form factor not “software” and there are microwaves and refrigerators with “PC hardware” (in quotes, because it’s actually a pretty ill-defined term), but they still are not “Desktops” even is you install Fedora on your fridge.
That’s just a definition for you. For the stats it does not matter what form factor it has. For the software and operating system, the form factor has 0 meaning. We are talking about stats and I explained it multiple times why the Steam Deck is a desktop PC from the perspective of web browsing stats. But I will end the discussion here now, as we are running in circles. Have a good day.