Because, if you as an investor buy Bitcoin even if it is a big quantity and you simply hold it it is very unlikely you will lose your money so suddenly and would drive you to kill yourself.
That young man got into a market he did not even know what it was, but at least he was saved from taking a permanent step which would have not helped to his temporary problems.
I think with that big of a risk he knows what he's doing but he can't control himself so lust makes him spend his money, because as good as people are in trading the future if they get out of control then he trades madly which makes him lose.
Here the importance of having limits and targets in making future investments is to maintain psychology and anger when the market doesn't match expectations.