Putting it aside, I don't know why the OP brings land into the equation, unless it is so cheap that you can buy chunks of land for $50.
Op and I are from the same country. Since he mentioned land, you should understand his investment amount is more than ten grand. Because you cannot buy land with less than $5K in most areas of my country. No matter where the location is. But if you want to buy land in town sides, you need at least $100K to buy a little-sized land. His father lives in Malaysia and works there. Most of the people worked there for decades. So, I guess his investment fund is more than $10K. Which is why I asked him not to put more than 10% in Bitcoin. After all, it's his father's earned money. If anything goes bad, his father will blame him for rest of the life.
His father's income is 500 USD per month and they use 400 USD for monthly needs. Furthermore, he was just a student and the whole family depended on his father's sole source of income. Do you think his family can have a fund of 10 thousand dollars?
One more important thing as you mentioned, it is not the OP's money and his persuasion or decision to invest in bitcoin was a wrong move. Maybe he doesn't care about the hardships his father had to go through to get that money. If he cares about them, he won't force them or try to persuade them when they don't like it.