From the perspective of a westerner, yes. In urban Japan, though, where Game Freak is located, the majority of trading actually happens in person, as Pokémon is such a cultural cornerstone there that it's not hard to wander around the streets and find someone else who has a Pokémon game and would like to trade/battle/etc. It's ethnocentrism, but it's something they probably don't even fully realize.
Then again, ethnocentrism is usually something people don't realize. A European who thinks it's a short trip from Dallas to Houston just because they're both in Texas isn't necessarily stupid; they just never gave thought to the differences in scale in the land size. Same with Game Freak. Most people in Game Freak have never stepped foot outside of Japan, and of those that do, most probably have no idea how people play Pokémon in other parts of the world. I would bet you that most of them think non-Japanese trade and battle in person because that's how they do it in Japan--and that most people in Japan think that too (no matter how much folks like James Turner and Lee HyunJung say otherwise).