Not only that, he was willing to create an account in an unknown centralized exchange, he told about violating privacy concern is completely BS.
Just do opposite things between thinking and practice. 
Meeting in person to complete buy/sell transactions for cryptocurrency is a very bad choice. This really violates your privacy concern.
If it is a person who is ready to show their face on Youtube, publicly make Facebook status about his investment in bitcoin, join cryptocurrency meetings like an influencer, KOL, no problem to care about showing face to trade in person. If no issue with tax, no issue to trade in person with those influencers if they think they won't be robbed.Personally I don't want to trade in person, have never traded like this.