What you need to understand is that manipulation exist in every aspect of the world financial ecosystem. With bitcoin, people considered as the whales somehow controls and influence the market value of bitcoin. In as much that the government manipulate fiat money does not also mean bitcoin is not manipulated. Personally, i don't think Bitcoin is better than US dollar but rather the system that bitcoin uses is better than US dollar system. The decentralized nature of the bitcoin network is better than the centralised system of the US dollar but i terms of value, US dollar is better than Bitcoin....