Cash is a positive representation of wealth. Mere possession of a currency unit warrants exchange of value.
Cashless is a negative representation of wealth - to wit: debt. Every “possession” of a currency unit MUST be tracked & documented as value owed to someone; exchanging value is changing who owes who what, a data chain accounting for all ownership of every bit of currency.
Exactly you literally have the power of the purse now.. if the government controls things, they will have that control.. and thus control of you.