> The United States Postal Service shall be operated as a basic and fundamental service provided to the people by the Government of the United States, authorized by the Constitution, created by Act of Congress, and supported by the people.
This argument makes no sense at all to me (I did catch the part where you don't necessarily agree either btw).
There's no law which says that everything a government does has to be run at a pure loss on tax revenue. Many local utilities are owned by their respective governments, and are not infrequently run at a modest profit. That doesn't make them private, it makes them profitable.
> Some argue that because of this we have seen a significant degredation in the quality of mail, because the USPS explicitly and intentionally delivers the equivalent of spam mail to every address in the country.
This is quite possibly the case, but has no bearing on whether or not USPS is a government entity, which, it is.
> This ties into the current post as it seems plausible the reason USPS shares customer data with Meta is due to their requirement of self funding.
This, I do not consider plausible at all. I'm 99% sure that some youngster working on the digital side of USPS added some tracking pixels because it's all they knew how to do.
That you don't seem to like the USPS or its operations doesn't make it not a government service.
Some countries have no government postal service, and some have no postal service at all, but the US clearly has a government postal service.