You're trying to apply german logic to american bureaucracy. They don't overlap.

I can relate to your confusion a tiny bit, especially since you want to move here. When I was in Vietnam, a lot of people I interacted with have the dream of moving to America. Unfortunately, they just know what they see in the movies. They don't realize the harsh realities of things like the complexity of paying taxes. In Vietnam, it comes directly from your paycheck and there is VAT. There is no concept of State and Federal level taxes. Even better, you don't need to hire an accountant to do these things for you because if you mess up (and the system is designed to mess you up), it can get a lot more costly. Even with an accountant, it seems I'm not immune.

When I came back to America (not by choice, I got stuck here at the start of covid and VN shut its borders), this is also why I established residency in an income tax free state. I had to get a physical address, drivers license, car registration, etc... it was a lot of work.

My suggestion? If you're going to come here, do more research first.