I would not be surprised if some Christian missionaries didn’t try to scoop the Orang Rimba up. Christianity is one of the accepted religions in Indonesia by law. They are having a hard time, and it should be easy to take advantage of that. Kind of like how it’s done in India. It could already be going on. Even if the Muslims leave their religion alone, which is never safe to bet on, they still face their mode of life being destroyed and eventual displacement, leaving them vulnerable to the softer type of conversion. The Orang Rimba don’t have much of a future with the world moving or being moved away from their way of life. Any little place left will eventually be taken away.