I think another misconception is the entire purpose of the USPTO. The USPTO wants EVERYTHING in the entire universe to be in the public domain. To achieve this, you give them your idea and in exchange they give you a monopoly for 20 years minus prosecution time. Even worse, anything you publish anywhere on earth after one year automatically gets in the public domain.
Anyways, enough ranting, but the system is very expensive and is actually not incentivizing the "inventor" anymore.
They said it's the purpose of the patent system, not the real-world effect. It's very important to remind people of this purpose. Because people (especially lawyers) keep pushing this concept that ownership on a patented idea is some kind of natural right being protected by law. Which is completely opposite to reality, and part of what leads to the system being warped in the way you complain about.
Have a look at the original Gore membrane patent: https://patents.google.com/patent/US4194041A/en
It's very clear, detailed and reproducible.
And since we are on HN, here a bit on the software side: IBM original arithmetic coding patent.
https://patents.google.com/patent/US4905297A/en
Perhaps it something that should not have been patented, but it's fully disclosed and reproducible.
Though I do agree lawyers and govts have basically colluded to create a system to suck money out of business in return for being allowed to function.
The point of the patent system is that you share your invention in the world, in exchange for monopolizing it for a few years. The problem is that most software patents share absolutely nothing of value with the world.