As my explanation above details, he(they?) won't be able too. It'll be a speculative vehicle like all other crypto's. With no demand outside of alternative crypto exchanges, he/they will never maintain stability. Law of Supply and Demand is a brutal teacher. If he/they release the coin as is currently planned, he/they will see really quickly the law of supply and demand will take hold and if there is no backing, and no demand for his/their currency it will collapse.

He/they has no understanding of currency stability or backing at all.. It's pretty apparent.

There hasn't been gold backing the USD since the Nixon Shock of 1971 Nixon severed the gold standard and replaced it with the Petro Dollar.

Ever since then the dollar only has value because OPEC only accepts dollars for their oil. If OPEC were to take a basket of currencies other than the dollar, the dollar would collapse over night. The ONLY thing that gives the dollar value is the DEMAND for oil. It's a great scheme, but it's doomed to failure.