Seems at least equally probable (IMO far more) that was due to the whole invading Kuwait thing.
Carter ten years prior: "Let our position be absolutely clear: An attempt by any outside force to gain control of the Persian Gulf region will be regarded as an assault on the vital interests of the United States of America, and such an assault will be repelled by any means necessary, including military force"
It appears that the US mislead¹ Saddam Husein into believing that the we would not intervene in the border dispute with Kuwait. This was enough assurance for him to go ahead with the decision to attack Kuwait. That action was then used by the US as a pretext for the invasion of Iraq.
It seems much more likely they were concerned about disruptions to energy which can immediately cripple an economy than some abstract vague mentions of using a different currency.
Carter ten years prior: "Let our position be absolutely clear: An attempt by any outside force to gain control of the Persian Gulf region will be regarded as an assault on the vital interests of the United States of America, and such an assault will be repelled by any means necessary, including military force"