For the second statement, it is good advice not to put all our money into Bitcoin. What would we call people who go against this rule? Gamblers? High-risk takers, or just plain stupid. I'll bet on Bitcoin. Would you?
Anyone who already knows the rules and has also read the experiences of others but decides to put all of his money into Bitcoin is only acting on their own choice, and you would not tell them how to spend their money; perhaps they have already read the rules, so let them be at risk for every result they get from their actions. It has been discussed several times that one should not put all their funds into Bitcoin unless they have better plans for other sources of income; otherwise, the person cannot hold their coin for a long time to earn profit. I think Anyone who is not following the rules is either relying on other sources of income or perhaps they have already made the agreement to sell off as soon as they have any arising need for money. So, my point is that whoever chooses that part already knows what they are in for.