In my opinion, it will not kill BTC, because the first investor to plunge into the crypto currency first thing they know and buy is BTC and at first all know altcoin starts from BTC, although currently the btc price is less stable, people still use bitcoin , and despite the current popularity of btc, it has been matched with ethereum, however BTC has a major influence on altcoin market conditions, which is a question of whether BCH could be like a BTC?
BTC remains a major pioneer in the development of digital currencies and to date Bitcoin will keep its popularity. Bitcoin has tremendous strength so I am optimistic that Bitcoin can maintain this condition.
Bitcoin is a digital currency used by many people and it signifies that Bitcoin has a very high level of trust. Therefore, now we all have to keep trying to use bitcoin on a regular basis, that's what will make Bitcoin getting more trust. Let's continue to improve financial transactions using digital currencies, that's what will make digital currencies recognizable globally and acceptable in many places.