Understandable, but for a lot of people (me at least) a large part of why we use Windows on one machine or another is because of what it offers over those other OSes.

I personally tend to use Windows because I can run it on just about any brand or model of x86 PC, it supports pretty much every component or peripheral I own, and it will run software not available for Linux.

So yeah, when something you make heavy use of adopts policies that you don't like, it's pretty common to discuss and criticize them. If nothing else, Microsoft (or any other company) would be wise to consider these complaints from users because they can easily impact their bottom line over time.

Whether you want to classify your thoughts as an appeal to popularity, or maybe as "moral equivalence", or some other sort of logical fallacy, it's still a logical fallacy. For one, it doesn't really matter who was first, it doesn't absolve Microsoft of anything. Morality or the right to privacy should not be relative concepts.

But related to your question - OS X does not leak data and comparing Windows with iOS or Android is comparing apples and oranges, as Windows is usually the desktop OS that has access to your company's VPN, your work and everything of importance, whereas a smartphone has at most access to your contacts, your calendar and your email. In other words sensitive, but not critical.