unlike any other asset which requires a large investment, you can always buy small amounts of bitcoin.
for example you can not go to a stock broker and buy $10 worth of stocks! they wouldn't even let you and laugh in your face. or you can't go and buy $10 worth of gold, that is physically impossible.
- but you can buy $10 worth of bitcoin
whether one should invest in bitcoin or not is another question. it is a risky investment and some people don't like taking risks under any circumstances and the market fluctuations can ruin their sanity specially someone who is already in debt.
I think his main concern at the moment is not having a lot of savings or major investments that if he gets into crypto he might lose the little that he's got. Yet he is also determined to invest in it because of the success rate he hears from people who got into cryptocurrency.