If money could guarantee someone peace of mind, then the man in person would've spent half of what he's acquired to find peace but what we was going through was beyond his wealth, and he's a prove that one can have all the billions and still not get peace or happiness. I might be wrong though but what's your opinion?
You are right but it is better to be rich than to be poor. The reason is that you can also read many news about people that are not rich but killed themselves so are the news of rich people doing so sometimes. I think the poor killed themselves than the rich people because the poor are more than the rich. Money may give people some ways to happiness but there are some things like sickness or bad health and other things that can make it not happen. But the poor can suffer those also.
True, if you are poor then you don't have the luxuries in life and who knows, you might also think of killing yourself because of the current status of your life. As in this case, perhaps it's not about his money, as he had called his brother about his wealth and how to contribute it. But probably he has some mental health issues that he can't talk to someone about it and it boils down inside of him.
Majority of us just dreamt of becoming millionaires, and so I doubt that crypto investors will suddenly take their lives without reason. There could be deeper reasons for this man and not just about his money.