Nevertheless, to exercise your philosophy, maybe it's not that they refuse to think, but just that they think differently. To state your example, couldn't a Christian say that a person in India refuses to think and learn about Christianity?
This issue of our fictitious Indian is not refusing to think and learn about Christianity. The issue with those who were raised in another religious environment, is that their "default" religion, if you will, is something else. The "default" religion (the one the vast majority accepts as 'normal') in the US and most of Europe is Christianity, even if the person does not live what they themselves consider a "Christian" life, they pretty much accept without question that the Bible and Christianity are 'right'. They don't have to be convinced a whole new paradigm to accept that the Bible is what we are supposed to follow. In my example, the person raised in a Hindu culture would have to overcome culture and upbringing to accept Christianity. Think of how the US population acted at the suburban Californian young man who joined the Taliban - they couldn't imagine he would "believe that stuff".
JWs, on the other hand, spend a lot of time finding fault with and focusing on what is wrong with both 'worldly' people and other religions. Yet, when any suggestion is made to judge the WT by the same standard, you can almost hear the mental brakes screech and smoke, and they often react in great anger. Anger out of proportion often points to a guilty conscience...I wonder how many suspect the WT is a corrupt organization that has nothing to do with God, how many know but for one reason or another don't want to leave it, and how many are so afraid it is they refuse to consider it?