zdnet[.]com/article/windows-7-is-surging-and-people-are-ditching-their-iphones-if-you-believe-these-charts/
Mainly because like Ed Bott I've seen tons of coverage saying that that swap is happening. It's NOT.
The Developer Beta of iOS 26 and macOS 26 was released on June 9, 2025, the same day as WWDC. The Public Beta arrived on July 24, 2025. Release candidates showed up in early September, and the final public release of iOS 26 and macOS 26 was on Sept. 15, 2025.Map those numbers to the chart above and you can see the supposed drop in usage for iOS as the population of devices running iOS 26 slowly expands, starting in June and growing bigger at a steady clip in August and September. That's exactly what you would expect if traffic from those devices were mistakenly being counted as if it was coming from PCs running an ancient version of Windows.