No population should be kept living a life we would consider extreme poverty out of some noble ideal. But we also shouldn't completely disrupt their way of life out of a different noble ideal. Wealth as we understand it isn't the only thing of value. Human connection, meaning anchored in community and deep roots, a sense of belonging and so on, are what really matter. Introducing modernity to such populations will sweep all of that away in one motion. These people would be left adrift in an alien world devoid of personal meaning, their only solace whatever addiction appeals to them most.