A lot of people sees two Bitcoins from a wrong prospective. There is no "main" or "legit" Bitcoin, because there is no central authority. BCH is as legit as BTC. They had disagreement, so there was a fork and now they fight for supremacy. Satoshi wrote about it long time ago. This is just a method of resolving dispute, not some "pump&dump" scheme. Vote with your money in pure form.