I don't think anyone was arguing for or against the use of Linux in any of it's flavors. There are a lot of posts, though, that say I'm using Redhat or OpenSuse or Ubuntu or some other version of Linux, and I'm having this, that, or the other problem.
The problems are not with the Arduino, but with the setup of the IDE, or the installation of libraries, or some other issue that only someone who is running that same version of Linux (or something very similar) would know how to deal with.
I don't read the foreign language forums, because I don't speak any of the languages that are supported. If there was a Linux forum, I would skip that too, because, although I have used Linux, and I like it, I'm not comfortable offering advice on how to solve Linux specific problems. Heck, I don't even understand most of the issues or the solutions.
Problems that aren't Linux-specific would go in the regular forums, but the Linux-specific (or Mac or Windows) could go in the OS specific forum.
Or not. 