The shift stands out because the change was not gradual but abrupt. Linux's rise came largely at Windows' expense, while macOS saw only limited movement over the...
Thing is, “Cloudflare identified this as a normal browser used by a human” doesn’t mean it actually is a normal browser with a human in the driver’s seat. There are going to be both false positives and false negatives (a browser puppeted by Selenium is still a human-usable browser, after all, and could even be taken over by a human in mid-session; by contrast, a browser whose settings have been chosen by a privacy advocate may make some expected indicators unavailable). So it’s hard to make any useful inferences.
Thing is, “Cloudflare identified this as a normal browser used by a human” doesn’t mean it actually is a normal browser with a human in the driver’s seat. There are going to be both false positives and false negatives (a browser puppeted by Selenium is still a human-usable browser, after all, and could even be taken over by a human in mid-session; by contrast, a browser whose settings have been chosen by a privacy advocate may make some expected indicators unavailable). So it’s hard to make any useful inferences.