I don’t quite buy the theory of bot. Most of these bots are designed to be stealthy to prevent bocking, and the easiest way to do that is by changing user agents to match the most popular OS and browser, thus preventing fingerprinting.

I am not doubting there are much more bots on the internet and many of them are using linux user agent, but I feel there also should be disproportionate amount of bot reporting as windows rather than linux.