it seems he knows exactly what he's getting into. he's not happy about it, but if you read between the lines, it looks like some of his "larger" clients demand the ability to trade this, and they are not upset about being limited to long orders only...
This is the second time I've heard him say that "long term Bitcoin will be zero". I can't even process how he came to that conclusion, since Bitcoin has seemingly been non-zero (and climbing) for 8 years now WITHOUT a futures market.