Seun Kuti's labelling of crypto people (traders) as criminals shows that he doesn't know anything about crypto trading. If he knew that cryptocurrencies are volatile he wouldn't be blaming innocent traders for his sister's lose of 50 million naira in trading, according to him.
That was his fault, you can imagine someone like him claiming not be knowledgeable in every aspect but yet he couldn't protect his sister from fallen a victim, this means that all he was busy doing was just to gain a public interest upon his life since after the demise of his Father Fela Kuti, what he doesn't know is that any other investment could possess same if one goes into it without an understanding of how it's been done, she thought it was a quick opportunity like that of the ponzi schemes to make money.
People that are looking for where to make quick money should understand that crypto trading is not a shortcut to riches. It is a risky business that people don't need to rush into because they have heard that others are making easy money from it.
This should taught her a lesson including are brother, you can't be too smart in your own eyes upon an opportunity in life, everything works by time and chance.