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.
Yes, these are global stats, but as someone from the third world myself, I can say that most gamers around here resort to piracy, even though steam has gained a lot of popularity, so, only a fraction of us are included in the steam statistics, which would make such data not very representative.
Perhaps a better source for understanding software usage in the third world is data from statcounter. They show something around 3 to 5%, a much higher number. However, even this data can be biased, because they only count machines connected to the internet and who browse certain sites.
In that case steam doesn't need to send the survey to all users, but only to a randomized sample, and it will statistically represent the whole of steam users.