Jesus this is an angry place to be.
Hate the be the bearer of bad news but the other guy does speak some truth. A futures contract is not equivalent to owning gold because it is the contract itself which holds the value until it is executed.
Unfortunately, a futures contract would not be enough for DIG to be worth its weight in gold until execution at least, regardless of the reputation of the miner.
The only way to describe it is like saying if a crypto said we are backed by a dollar but we won't get those dollars until next year then the price won't be worth a dollar until next year.