Investing is never justified using other people's borrowed money, this is not a financial freedom solution, but plunges yourself into new problems.
Investing also requires planning, maturity and serenity in running, how many people have money, but they are not necessarily ready to invest in crypto, because they are aware, to get started requires knowledge, strategy and understanding of investment patterns.
The fate you describe is even worse, if one cannot generate returns.
A good investment is an investment that is carried out fairly and yes, it is not recommended to make a loan that will be used for investment because some people will not immediately benefit in the short term so that loan repayments can be hampered for them. And it's true as you said that investments made with planning, calm and discretion will work better in the long run because the person can be patient with changing market conditions for the worse.