If this person isn't a troll, and is actually serious, then I'll just state this simple hypothesis. Most likely, the majority of the NA server funds are being generated by selling to Americans. Therefore, it makes sense for a company wanting to increase revenues to produce content aimed directly at that audience, which includes major holidays that they are familiar with. If you would rather not see this 'iconography' all over the ships, it's pretty easy to curtail:
- Whatever 'oppressed' country you happen to live in needs to step up their game and;
- Buy more stuff than the US does
Pretty easy, no? If you can't do this, then please, take a hiatus from the game until this is all over. Because until then, there's no way Sega will NOT be doing this stuff (it would be absolutely stupid of them not to), and all you'll be doing is getting your scrunchies in a bunch over nothing.