2024 is the Year of Linux on the Desktop, at least for my boyfriend. He's running Windows 7 right now, so I'll be switching him to Ubuntu in a few days. Ubuntu was chosen because Proton is officially supported in Ubuntu.
0.69% (nice) on windows 7 64bit. That's 0.75% total or 0.91% including windows 8 which is also dying. This is slightly under half of the linux user base according to these statistics
I think the 1.91 also includes the stream deck, but for some reason it isn't included in the list (it is included if you select only Linux). It is about 5.5x Arch so around 0.8% of the total installs.
So the discontinue versions are around the same number as Linux desktop installs.
Win 7 64-bit handily beats any distro of Linux at .69% (nice). Comparing only to 32-bit isn't a fair comparison. Not that I'm against using Linux, I use Pop_os on a spare computer as a Linux test bed for gaming.
Does distro breakdown matter that much though? It only really matters on windows because each version has significant compatibility changes. AFAIK as long as you update your system Linux compatibility with tools like wine/proton shouldn't change much between distros.