Perhaps they don't want their normal screen name to be associated with pro-nationalistic views, as they are un-popular. I imagine that if I were a Pol working for a German software company, I would feel uncomfortable writing what OP just wrote under my normal screen name :P
I don't have pro-nationalistic views, that's a purely economic issue to me - its result is a long-lasting drain of capital. I did feel somewhat weird after posting that though, and @lossolo caught me.