We can't really say if this is true we don't know if the majority of Bitcoin users are Asians.
We couldn't tell who knows maybe you are wrong .
Precisely, there's no assurance even the creator is from asia or maybe he just hide its identity but knowing who's holding the big part of bitcoin are still questionable, the good thing is if asian really adopt the system especially the chinese and hindu they got a lots of populations and its really good to know if they will use it in every days transactions.