^Dont be so fascinated to know a scammer giving up their profession. It’s too common among full circle, many people give up for a variety of reason. Bitcoin is not easy to scam, nobody get scammed in bitcoin but bitconnect is a yes.
That's true also. There are doctors and lawyers who end up being criminals too. Disappointing as it may seem but shits happen. Just just can't tell when a good man go crazy. But its more encouraging to see criminals become law abiding citizen and then have a professional career.
Your friend probably found his best career choice and being a medical practitioner is just a mistake.