Linux users aren't more principled or anything than windows users. I'd go as far and say that people just want free stuff and some are willing to put more effort into it. We have no higher standards or morals and are no better than the windows or mac crowd.
Yes, I get to use Linux tools from Windows, helping keep me on Windows.
But it also means I'm more likely to build/test/fix my junk on Linux, helping me reduce my absolute and pre-existing dependency on Windows.