I'm one of those people who doesn't want to explain bitcoin unless someone asks me. If someone were to ask me about bitcoin, I would definitely answer to the best of my ability, but I would not recommend that they invest in bitcoin unless they are knowledgeable about bitcoin.
Even though bitcoin has a price that always goes up and reaches a new ATH, when the market goes bad it can be so severe that the risk for new investors who don't know about bitcoin price movements will have a very big risk. I don't want to risk teaching them about bitcoin investing and trading. But if they ask for my opinion I will give mine but the risk and choice is still theirs.
If they force me to teach about bitcoin trading maybe I will teach them and I will tell them to try to buy with less money and will give a warning not to buy with much money before they know how bitcoin trading works