If you manage your company very badly and you are dealing with hundreds of millions you can misplace $100 million but it feels a bit odd
There is a lot that we don't know and there has probably be some people trying to s.cam successfully or not
Incompetence is often (or usually?) the best explanation for things. But in this case it just doesn't seem that plausible. How likely is it for a team of guys that created one of the first and most popular bitcoin exchanges, and were also early adopters of bitcoin themselves, to be incompetent enough to just "lose" 800,000 BTC and then "find" a wallet with 200k?
It is very unlikely but it is already very bad management and incompetence to allow that much money to be sc.ammed away by those who were not part of the alleged sc.am
On the other hand finance and dealing with large sums of money, thousands of bank accounts, hundreds of thousands of customers is not something you can become good at in 2years if you don't hire competent experienced professionals
This comes to mind:
Never attribute to malice that which is adequately explained by stupidity and laziness.