If you do not know what happened with the deposited crypto currencies, you should not mislead the investors with claiming it is gone!
If Dean still has the crypto currencies (what I assume), investors can enforce it through legal action as the company BetKing is registered and the liable party is known.

Nobody knows what he has done with the investors money because there is no way to check or cross reference what he has said with what he has done. I am not claiming the funds have gone I have asked where the funds have gone.
You said investors have virtually lost all their investment, but if the crypto currencies still exist and are enforceable, then they lost nothing.
You are right, even if he apologised it will not be enough because investors have lost virtually all their investment.
Where is the 50 BTC Jackpot? He said there was one but there does not seem to be any winner and there is no 50 BTC Jackpot game on the website.
Was this a jackpot where each game contributed or did he offer the 50 BTC from investor's money?
If it was a jackpot where each game contributed, then it is another scam. If it was a jackpot where games did not contribute, then he can cancel the jackpot at any time.
Where are to 500+ BTC and 2000+ ETH and 400+ LTC bankroll?
Since there is silence on part of Dean Nolan and his trying to close down discussion by locking the Betking thread, it does not help the situation and further damages investor confidence.
Every investor still having confidence in BetKing must be a dumbass, considering that he committed an investment fraud and scammed its affiliates!