If history is any indication, the danger of forks is way overrrated. Oftentimes cryptocurrencies will reach new highs shortly after a hard fork. Two prominent examples are bitcoin and Ethereum. The markets are quick to adjust to forks and recognize the value of coins even after a split.
Hard fork will give free B2X and absolutely no impact on BTC value.
Not sure Bitcoin price won't be affected after the fork. There is a possibility that many holders are just waiting for the free Bitcoin Segwit2x and then take their profit. It may cause the price to fall.