Thing is what I tell them seems to bore them because, well, it's boring. My advice is basically this:
Put your money in a broad index fund and don't look at it for 10 years.
In giving this advice you start to realize it's not what people want to hear. It's not that they want to get rich quick. They just want to make a lot of money really fast. It's completely different.
Crypto-skeptics such as myself could clearly see that the vast majority of Crypto Andys were motivated by nothing more than greed. There's no fundamental belief in blockchain technology. There's no correcting the (alleged) fundamental flaws in the traditional financial system. In fact, there's an awful lot of ignorance of why the financial system is the way it is and little motivation to learn (IME). It's just greed.
So when I see these people get wiped out, I feel bad because that must suck and it's probably not the right time to say "I told you so" (or even "I informed you thusly") but I hope at some point people take ownership for their foolish decisions and do better next time.