it's just diversity, which will invigorate the community and spread freedom. in case you didn't know, alot of people who shun linux in favor of proprietary software might do so because they don't trust the idea of programmers talking over their heads. programming languages are foreign to them as much as spoken foreign languages.
foreign languages exist because of geography and politics and taste. the geography and politics are why they are exclusive. i was only saying that foreign languages that cost more than just the minimum to learn with self-study are analogous to expensive proprietary software versus the cost of burning a cdrom with free software. once usable learning materials are available freely and openly, nobody will have to pay anything more than the time and work to learn the language.
the freedom in linux and the notion of source code as protected free speech is where this analogy springs from. as of now, if there are no gpl'd foreign language instructional materials which at least cover up to the foreign language comments in the code, such comments are effectively like free proprietary binary snippets tainting the gpl.