I genuinely believed at the time that Emacs and Linux and Common Lisp somehow made me special, when in reality I just wanted to convince myself that I was a better developer than my peers. I wasn't. I was a good coder, but I was immature, wasted a ton of people's time, and refused to listen to people who wrote code that solved real problems while I was on my "let's switch to Linux and Lisp" crusade.
I can point out a ton of examples where Windows is significantly better than Linux and vice versa. Same goes for most programming languages, development environments, and software methodologies. Saying "I like UNIX more and prefer to develop in it" is one thing. Saying that a choice of the OS tells me something about an organization and that their particular system of choice is somehow based on worse philosophical principles than my alternative is naive and condescending beyond belief.
The rule of thumb is to understand before you decide you've understood. If we used this principle more often, the industry overall would be a much more nourishing environment to work in.