WHAT A GREAT EXAMPLE. I think Language is a living thing and maybe it just depends on the nation how long they hold out to the old?? I can imagine there's not much resistance to change, though. I think it's just within a nation's nature to just adjust constantly, to play all roles and speak all tongues. Even within human limitations, the brain has amazing capability for language. We're built to communicate and modern trends probably sneak into their lexicon without an issue. If it's all on a range of colors, then nations must be an equal gradient of red and blue, right? I think it's something they probably have a lot more awareness about than we do and a longer memory for older versions. They have to remember an eternity of events, why not a lifetime of languages too? with degrees of rustiness though...but YEAH it's realy hard to even pick at this topic because it can go either way.

FOR GERMANIA THOUGH, since in canon, he and Rome sit around in heaven watching the living world and apparently watching TV, I like to think he adjusts his language to the kids, but the more angry he is, the more archaic he gets until he's 99% incomprehensible to his children. Interesting though /pats your passionate head and gives you a sticker