I always thought that these design classifications are very arbitrary and mostly made up by college 'academics' and salespeople. It is not like there is scientific method being used here ,so I don't quite share your indignation.
I have nothing against this 4000 USD derivation other than it is unoriginal. Since you would not even call this similar to the aforementioned mid-century design , I would guess you are the customer they aim for .
What do you do if your vac pipes are leaking inside the walls and how do you know if they aren't? Also I occasionaly vacuume something that I need to recover from the bag or canister, how do you do that with central vac if it is somehwre in the pipes?
P.S. I personally hate vacuuming and let my gang of robots do the whole thing. They clean the house well and entertain the cat.
Nice winter landscape by Alexander Kramer, one of my favorite contemp. landscape artists. Painting is done in suburbs of Helsinki and depicts Baltic Sea , I used to live there, so it is special for me.