So?
Many have predicted the death of the "desktop" as we know it anyway. At least for a majority of users. And for a large part, that is already true as the majority of usages now (in volume) is on devices that are not desktop machines.
But as far as the traditional desktop is concerned, sure Windows and macOS are still king. I think Windows is going to lose market share (it already has, significantly) over time, macOS is going to gain even more, and Linux-based OSs will gain some as well but that will probably remain under the 10% mark for the next decade or so.
And my "so?" was meant to say: what's the problem with that? A much larger market share for Linux-based desktop would imply a complete change in the development and release models, and that would not be good news for "Linux" users. Just my opinion here of course, but I'm pretty convinced of that. Just look at the drama that can happen when large corporations mess with Linux distros to get a feel of what it could be if it were much worse and much more widespread.
I personally have used Linux for years for various use cases, desktop being only on my laptop, for occasional use, until recently.
Windows was still my main OS for workstation uses.
Until a couple months ago when I finally made the switch to Linux (DE: KDE plasma) as my daily driver on my main workstation. So when things are not occasional anymore but become your only environment. I have a dual boot to Windows but haven't booted to it in 2 months now.
Otherwise, yeah, Linux, the kernel is literally everywhere these days, due to Android, and runs on more machines than Windows. But it's just the kernel. Android as an OS is different from typical Linux distros.
And while Android works OK on mobile devices, I wouldn't, ever, ever want to have to use it for any serious work.
And with all that said, I'm not sure why "the year of the Linux desktop" has become an obsession, or even a meme. I am glad Linux has become more than usable for desktop use these days, but I don't care if it's going to take the world over or not. Actually, I think the "competition" (if we can call it that) with commercial systems is partly what drives its development the way it is, as free software in general has largely been a reaction to commercial software.