Honestly there is nothing more annoying to me than people coming to me about bitcoin who are simply wanting to learn about it for "making profits" kind of like your friend here. When I first got in to bitcoin, back in 2014 or so, it was honestly all about the technology. In fact I studied bitcoin for about a year before ever buying. So how to explain bitcoin to noobs?...make them learn the underlying technology.
LOL, right. I also found many people like that. just heard about bitcoin, or crypto, then thought that it was a fast track to make money with little risk. however, a lot of people are attracted by it, and when they get into the crypto world, they will be disappointed that making money is not that easy.
well, i also agree that the best way for them to know about bitcoin, about this technology is to learn, practice, read, watch youtube, and others. Currently there are many explanations about bitcoin on the internet. if he was really interested, then he would look for the information little by little.