Almost 99% of investors want to deposit today, tomorrow they will become sultans. Actually it can't be like that. It could be possible that tomorrow it will be a loss and the next day it may still be a loss.
Even in the early days of bitcoin, not 99% of people wanted to deposit money and make money overnight; these new generation bitcoin enthusiasts now make up almost 80% of the community. Since we all know that holding onto money for a long time helps and will still help, you can't say that 99% is accurate, even though most new investors had that idea in mind before entering the market and thought they could make money overnight.
If we have lost, we have to pivot, analyze again, find out why, where did it go wrong, what is the future. Not if the loss is already screaming scam, blaming people who give "advice", following influence etc.
The majority of forum users avoid these every day, and every time someone asks for advice about bitcoin, we don't provide it; instead, we inform them of its basics and other things they should be aware of. I think you should refrain from telling him about the risks involved in doing these things because if they fail, they will likely blame you, the person who gave them the advice. Giving them information rather than giving them advice is, in my opinion, the greatest way to help people accept bitcoin. You should let them decide if they want to take the risk or not.