No, of course it doesn't prove anything to translate it into another language. But if someone wants to, so what? Are they not paying the USA a compliment by so doing? They wouldn't bother to if they didn't like the song. They just wouldn't care enough to bother in that case.

The only time songs get translated into another language are when they have attained great recognition by the people who speak that language. It's a sign of appreciation and approval when a song gets accepted into another language.