Have you ever gotten a hamburger at a fast food joint that looked anything like the one on the menu? You seem surprised to have received a product that's inferior to what was promised in all the marketing hype.
Steam charts showed on Friday that over 25,000 people were playing KSP2. That's over $1.25 million gross on day one.
I'd say that all those promises you quoted worked exactly as intended, just like the pictures of that tasty hamburger.
Now that you realize that marketing never reflects reality, all you can do now is decide if you're hungry enough to try the fries.