Precisely. I wonder how many NSC posters are capable of more than a few words of conversation in any foreign language.
But you're not comparing like with like. We were not talking about learning languages per se but about people living in another country and learning that language. The question should really only be asked to NSCers living abroad.
It's such an English thing to say that learning languages is difficult: it's really not that hard. I have a few friends who speak five, six, seven languages (none of them are English, needless to say).
I always remember going to department store in Finland and seeing the staff with flags on the badges showing the languages they spoke - pretty much everyone spoke two, the vast majority spoke three and there were quite or few who spoke four or five. And these were people who worked in a shop, not high-powered executive roles.
If I moved to a foreign country, I would easily learn enough of a new language to answer a few simple questions about my job within three or four months.