Earlier quoted context omitted.
Would also eliminate an incredible last grain of financial privacy people have. When every transaction goes through FED, the government won't need to call or subpoena anyone to know where your money come and go.
How does the Post remain private, since the Government runs that too?
The return address can be made up. Although the general area it is sent from is recorded in the form of zip code.
The contents of the letter are also not known.
So even if that info got out, there’s really not much information beyond the fact that mail was received, and we probably know who sent it.
Thats a world of difference from cryptographically signed transactions between known parties with known amounts.