Has industrialized warfare between developed societies caused an unnatural stigma against indigenous violence?

Small scale violence of tribal people is small scale because it is limited to a small number of people. It is no less violent if you are one of the people involved. People naturally have a high birth rate and would expand to fill the capacity of the environment. They aren't going to give up territory peacefully. Those that do won't survive. As the populations rise and bump up next to their competitors, they naturally will become resentful of them. Warfare will create hatred and it doesn't matter if it is a clan or a state. I think most people today have forgotten what it is like to struggle to survive. We have had a few centuries of progress that have made the struggle to acquire territory not about survival but political goals. That may change in the future.