Minerjones has been involved in a number of questionable (at best) escrow transactions. For example here (the original has been edited) of when he very strongly was implying he was holding exactly 1 of 3 keys to a multisig escrow address, and between 10 and ~100 BTC ended up missing after the BCH forked coins were sent to an exchange and it appears even more money may be missing from the conversion of altcoins into bitcoin.
Here is a second example in which it was initially said there would be losses to investors of money the escrow agents should have been holding (I believe in this case the money was eventually recovered from the scammer). In this case I believe minerjones to be one of the escrow agents in the transaction, but I have not immidiately been able to locate a post/signature of his to confirm this. There are posts by others indicating minerjones was acting as one of the escrow agents.
Here is an example of general incompetence in regards to securing his own funds.