I literally just remembered that ChromeOS is a thing. I bet a big chunk is people seeing that they’re cheaper and deciding to switch to those. So, in a way, it kind of is Linux.

My guess is either people are downgrading, or enough people are dropping Windows entirely after previously using Windows 11 (whether by switching to Mac or Linux, or by deciding that they don’t need laptops at all and can get by with just an iPad or something) to affect the percentages.

Edit: oh, also Chromebooks. I bet it’s a lot of people switching to ChromeOS.