I read his answer obviously, as you can see I replied directly to it. I admit that I did not check much info about bitXXX assets before I posted my comment, but other points are still valid. Maybe you did not read my whole comment..
I briefly read about bitUSD and bitEUR assets a bit and it's pretty neat with the 2x collateral backing via the smart contract. But this is not valid for open. BTC, it's basically the same like on CEX (giving word that is backed by real BTC 1:1). But for sure, I would trust openLedger more than Bittrex.
I don't have a lot of money in crypto currently, so I am not so much concerned right now. I use multiple CEX and DEX and also cold storage to spread out risk. The main problem with DEX for me currently is a very limited number of coins, but this will improve in the future, I bet.