My dad lives part-time in an unincorporated village in Alaska which has a population of 13 as of the 2010 census. Once a week, the USPS essentially charters an airplane to deliver mail there, for which senders pay the same rate they would to send mail anywhere else. The postage obviously doesn't come anywhere near covering the cost of delivery. Without this subsidized mail delivery, which is often used for groceries and other supplies, the full-time population would likely drop to zero. While it's likely that at some point in the future, if that kind of mail service continues to exist, drones will make it more efficient, it will always be much less efficient than delivering mail to people who live in cities.
It's reasonable to ask whether it's desirable to continue to subsidize people choosing such a lifestyle, and there's a good argument to be made that it is not. Many of the people who live in remote parts of Alaska have a rugged individualist mentality and a dislike for the idea of subsidies, but tend to get quiet when theirs are mentioned.
To be blunt, that's often true of rural culture in general these days.
The simple fact is that providing services to such communities is incredibly inefficient due to a lack of economies of scale. Without government subsidies, they would simply be unable to get services without paying exorbitant rates. That's not the market being immoral or whatever, it's literally just that the cost of providing the service is so high (same reason such communities often have fewer local government services as well).
They don't want to come to grips with the hypocrisy of claiming independence while actually actively choosing a highly subsidized lifestyle, and most other people are unwilling to call out the behavior because it's seen as bullying in some fashion.
Anyway, let's look at ways to make USPS more efficient. The pandemic has caused a 30% decrease in shipment volumes. If USPS wants to stay solvent they can furlough employees, lay off employees, and/or increase prices. Postal workers are unionized, so there's little chance of reducing employee expenses. That means they have to raise prices and/or ask for money from the government (which comes from taxes). Trump wants them to increase prices before he'll give them more money. This is because right now, Amazon (along with many other businesses) is shipping tons of packages via USPS. USPS loses money on each package they ship, so this is effectively a transfer from taxpayers to Amazon. Here's Trump quoted by Politico:[1]
> “The post office, if they raised the price of a package by approximately four times, it would be a whole new ballgame,” the president said during the signing ceremony for the latest coronavirus relief package. “But they don’t want to raise it because they don’t want to insult Amazon, and they don’t want to insult other companies, perhaps, that they like. The post office should raise the price of the packages to the companies. Not to the people, to the companies. If they did that, it would be a whole different story.”
Now let's look at the PDF. It mentions that Koch has funded a libertarian advocacy group called Americans for Prosperity. This group has come out against H.R. 6800, which authorizes $3 trillion of spending.[2] Of that, $25 billion goes to USPS.[3] That's less than 1% of the spending in that bill! Perhaps Americans for Prosperity aren't trying to kill the post office. Perhaps they simply don't want the government's budget to grow by another 15% of GDP, especially since much of that is likely directed towards special interests.
The bill also gives another $200 million to pay for salaries of workers in the federal prisons and it gives $187.5 billion to metropolitan areas (this money can't be spent outside of metro areas). Scanning through, I also see some stuff about discouraging the importation of drugs & medical equipment. It's a total mess.[4]
What I think is actually happening is that some people want to get another $3T of spending passed (mostly to enrich their constituents & ensure their re-election). To do this, they're using public support for the postal service (and public disdain for the Kochs) to try and sway voters. It's a sleazy tactic but it often works (as evidenced by how many upvotes this post has).
1. https://www.politico.com/news/2020/04/24/trump-us-postal-ser...
2. https://americansforprosperity.org/afp-issues-key-vote-alert...
3. https://www.linns.com/news/us-stamps-postal-history/heroes-a...
4. The full text of the bill can be read at https://www.congress.gov/bill/116th-congress/house-bill/6800...