I don’t believe this.
I don’t believe this either.
The only reason he would have would be if he somehow were to have inside knowledge that one of the world’s currencies were about to be revalued (upward) by that country, and he were planning to put the cash from his sale into that currency before any revaluation.
Then, back into gold.
Frankly I think it’s a bald-faced bit of disinformation.