Bro, thank you for sharing the info and video. You are very brave, one man operation, travelling and exploring, not afraid of robbery. My greatest respect to you.
Poor or rich? That always relative. Tibetans have unlimited access to land for food cultivation and for their herd of Yak. For Tibetans willing to work hard they can have a rich live, clean air water environment and fruits of their labor bountiful. Compare to the Han Chinese in some of the drier northern states Tibet is paradise but then it also a matter of attitude.