I dont see much in the way of people saying how awesome Microsoft is. Most of it is refuting what BS you and others are spewing.
One could argue that we're doing the same thing. People who migrated from the Windows platform have criticisms of it. What it ends up sounding like, though, is 'WINDOWS IS GREAT AND BETTER THAN MAC' every time it happens. On a Mac forum, you'd EXPECT people to say that the Mac is better than Windows, because most people voluntarily choose to use Macs, and have to decide to use them over Windows. Windows is seen as a 'default' operating system. If you buy any standard non-Apple computer, it'll probably have Windows on it unless it's an Ubuntu netbook.
People defending Windows from perceived attacks will probably be argued back with, because of the nature of the forum. I wouldn't say that people are acting fanboyish as much as they feel put on the defensive—they're on an Apple forum, talking about how they prefer the Apple platform, when voluntary Windows users show up to defend Windows from attacks they see as inaccurate. This puts people on the defensive, and annoys them, because it feels as though they're criticising them for choosing a different platform from the majority. 'Why don't you be like us? Why did you have to pick that different platform ANYWAY?!?!?!'
Basically, what people are doing is joining a forum for a minority platform—the Mac—mostly composed of people who voluntarily opted not to use the majority operating system (Windows) for whatever reason. People who switch tend to think these things out, because it's moving to an unknown experience. When people using the majority operating system criticise the minority operating system, which switchers have a lot invested in, it comes across as arrogant.
And to answer Rod's post—Yes, I've used Windows. I've used it for
seventeen years. I know how to keep a Windows system clean and avoid a lot of the pitfalls a lot of end-users deal with. Does this mean I like it? No. I'm happy with the Mac. This is exactly what I talked about when I was referring to minority platforms. Don't assume that because someone doesn't care for Windows they haven't spent a significant amount of time with the platform.