a lot of people think after the segwit2x activated the price of bitcoin will dropped to lowest down more than 30% or so from the current price , it is just a completely wild speculation .
Given the BTC/BTC2X futures at 0.2 BTC2X for 1 BTC, a price drop of 20% is logic. A drop of 30% is understandable, if we assume that bitcoin price is currently overrated.