Dude, its the same thing as with the koreans, and their "duke of the north" shoujo manhwa love interest trope. Its such a part of the culture(?) its simpler to accept it.
Well, its kinda your problem. The characters there most likely wouldnt really have perfect russian pronunciation, what with their constant moving between two countries and thus, most likely, irregular usage of russian.
Now, if you mean crappy in terms of sentence structure, here i agree, grates a bit.