Understand the value of Bitcoin in the market first, encouraging the people to know the value status and the volatility of the Bitcoin in the market. Soon it will be means of exchange for all other countries to be acceptable
You shouldn't introduce Bitcoin because only its price and volatile which is not its main point of this cryptocurrency. Technology behind it is what most people wants to develop and make the future become better like bank which is include this great technology.
Yeah it is not good to discuss only the fall but it is good to let other know the real reason being the invention, some people will get worry about the price that is now a day running in market so tell them that it is for very short time, soon the price will be high once again, so better tell the real reason, it is not only currency but it is an entire business as well.
Why you are stopping him not to introduce bitcoin to people? dont you want bitcoin would be the supreme currency and would be prevailed all over the world. You must leave this arrogant attitude.