Some of the items in the list that a cashless society is claimed to end you can already do cashless using apps such as CashApp, Venmo, or even PayPal. For example: garage sales. In addition, in a cashless society, I'm pretty sure they will allow children to have account to ensure they are enslaved to the system early. I suspect they can already get some of the existing ones depending on age such as Venmo.

However, you may chose not to participate in those activities for risk of the government getting curious as to why you are involved in so many private transactions if you have a garage sale for example (they may suspect you've started dealing drugs or laundering money). Also, given how the government is trying to stamp out small businesses, they may very well ban or limit private person to person transactions to ensure no one is ever able to start or run a small business again. In a cashless society, the government can do a lot of messed up things. And seeing what they have been doing lately (and probably longer that but it has become more obvious lately), not a power you ever want to give these psychopaths.