They just have to learn the hard way. I do sometime think the best way to educate someone is to let them learn from their mistakes. Some people even after you try to teach them would still not be ready to put their learnings into play. Someone that's nee into the crypto market should have just two things in mind, storage and purpose. Purpose helps you grow a thick skin on why you should invest into that asset, in this case BTC. Some investors don't even know why, they just see that people are making profits and wants to also follow the crowd till it gets blurry.. the type to storage method you choose for your investment also determine how safe your asset will be on a long term. If you fail at these two points you have already failed your investment..
Your points are understandable, since wise man said "experience is the best teacher" we should go by that. No matter how much you try to make some people understand, they will never get it, until they learn it through the hard way. Avarice is part of the things that are causing secret problems to an individual. Starting bitcoin investment just because you see other people benefiting from it, cannot make you like them. Because if they didn’t follow the appropriate steps and do the needful, there is no way you will you will meet or see them in that position. What will shape your investment depends on the level of your decision-making, you must know your purpose and secure a good storage in order to reach your destination.
Some people try to learn everything in advance. But it is probably quite difficult to convince them that they will not be able to learn everything about Bitcoin by studying alone. That is why new investors who are interested in starting are always advised to start with small amounts. This way, they can start at the same time and get the opportunity to learn from real experience.
However, those who think that they have to learn everything in advance. They are actually wasting time. It can take years to learn everything about Bitcoin. Wasting so much time is definitely not a good decision. It is important to understand the risks, volatility, and how much money to invest in Bitcoin at the beginning. Later, by starting, you will understand what is the right decision for you.