Yes i would agree with you that many people and many religions believe that unless you are part of their religion you have no hope
However i believe and i know that many others believe now that that is not true
... three things to get eternal life.
..
Repent and be baptised
This is a contradiction, since you believe eternal life is based on being a Christian. Yet half the world know nothing of Christianity and have no opportunity to ever be baptised. Such a belief is an relic from a past time when people had no idea of how large the world was or the varied belief systems of the different continents.