Yeah, schools being out explains the major drop in ChromeOS devices; check out Radar's 12 month view and how ChromeOS data looked August/September 2024.

But if it significantly explained the rise in other percentages, we'd see all the other shares go up. However, Windows and MacOS are flat; 64% and 30%, respectively, last and this month.

Only Linux went up; so its likely there's some genuine linux desktop adoption going on. But the rise in Linux marketshare is pretty steep; two months ago Radar measured it at 2.6%, now its 4.4%.

It could be legit. There's been a significant uptick in tech Youtubers pushing linux content (LTT and Jayz have both done recent videos on it), including the Lenovo Legion Linux vs Windows perf comparisons which found Linux to be faster, Lex Fridman just interviewed DHH and they spoke at length about linux setups (~1M viewers on that likely), and the pushback against Apple in the tech circles is reaching a fever pitch.