If it was possible to introduce all the beneficial elements of modern civilisation without bringing all the negatives then they should be brought into the 21st century. However I think any attempts to bring modernity to such people would be royally screwed up.
One thing's for sure: if we are having protests over the destruction of the Orangutan's habitat then we should be having the same social uprising over destroying the habitats of these tribes. Displacing these tribes through habitat distruction and forcing them to integrate among populations elsewhere will be an even bigger disaster than the well meaning introduction of the modern world to these tribes in their own environment.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
