This is potentially the most significant announcement in tech and society for the next 20 years. Digital dollars are the US version of the Central Bank Digital Currency (CDBC) and brings elements of programmable money to the US dollar as well as eliminating the anonymity of cash. CDBCs could be "programmed" such that they cannot be used for certain transactions (eg: banned at the digital level so that CDBC currency cannot be used as part of an unlawful transaction).
CDBC is Orwellianism applied to money.