It's hard to borrow when you know to yourself that you will have difficulty paying it off, it's better to endure than to be stuck in debt when you yourself created your own problem when you shouldn't have a problem, you know what this means.
Although trading is good, but if you are not that broad-minded and you don't have the capability to make passive income from trading, then forget about trading.
Correct especially on his case that he is planning to do futures trading with x5 margin which means his loan money has a high chance of being liquidated considering how volatile Bitcoin.
I don't care about the 5x risk he wanted to take because some traders can be lucky enough to overcome that, or they have a good trading plan that will take care of that, especially if the market is seriously trending with smooth volatility. What I am against is taking a loan for trading itself. Whether it will yield good results or not, it's just against the ethics of the game. You don't trade with the money you can't afford to lose. He can not afford to lose the money in which the capital and interest accrued would be paid back on a risky trading. The decision is faulty in all good sense of thought.