Then your expectations are unreasonable given reality, and you must have trouble living on the Earth
I don't care how long you've been working at the Mercedes dealership, if you don't remember cars from the 60s, 70s and 80s you have no reasonable point of reference. A great paint job takes a ****-ton of work; no assembly line is going to cut, sand, buff, and respray to get what you think should be standard MO on a mass-produced vehicle, especially on a truck. Have you ever had a show car paint job? Getting one is a *****. Every single new vehicle I have ever owned has had a less than show car paint job. Some were better than others but none were perfect.
Every car on the road today has a paint product that as a whole is a worse product than those being used even 20 years ago, much less 40 or 50 years ago. The paints have more flexibility - they have to, in order to withstand the movement of thinner body panels - and better UV inhibitors but are applied far thinner and have less solids, lack the volatile compounds that helped prevent the quick flashing that creates orange peel in the first place, and never harden like the old acrylic enamels. In short, the paints today suck in terms of lasting ability compared to paints 40 years ago, but they are better in other ways (weight, environmental issues, health issues).
In any case, I don't know why you think $40k is a lot of money for a vehicle. The average new car in 1960, in inflation adjusted dollars, would cost $25,000 today. This was a vehicle with virtually power nothing, no safety features, no electronics, anemic engine performance, shoddy fuel economy, a body that would rust in 5-10 years and a vehicle that would be ready for the graveyard by 100k miles. You can pick *any* new car on the market today for $25k and you'd find a crazy raft of safety, amazing fuel economy, bodies that can make it 20 years without rust out, features out the yin-yang and a vehicle that you can probably drive to 200k miles without any major repairs. Yeah, some things are not as good, but everything else is light-years better for comparable or less cost.
You're living in the golden age of automotive. You remind me of a guy on my ship in the Navy. This guy would find a $10 bill on the ground and ***** that it wasn't a $20