This is fascinating.
Honestly , while I found BlockChain & Immutable Ledger disruptive technology , I have zero trust in cryptos.
The amount of scam in this industry is just obscene, unlike banking , there is no such thing as insurance for your wallet or legal recourse to get back your assets, your pretty much on your own and I'm fairly convinced he won't get back his 1.5M$ Bitcoin .
I feel bad for him , but there is very little surprise playing with unregulated stuff.