Have you ever bought a nice pice of furniture? This stand is a super low volume, custom design. It's solid milled aluminum and likely very hefty since it needs to handle a 32" monitor (which itself is probably pretty hefty). Not to mention the intricate hinge design that they say is rock solid (not an easy feat to achieve).
This whole system is built to compete against $25k-50k reference monitors.
Here's a page of Table Lamps from Restoration Hardware for a sense of perspective:
https://www.restorationhardware.com/catalog/category/product...
And the whole reason they don't include the stand with the monitor is because it's built for media production houses that already have rigs set up with their own mounts.
They're not building this for designers to run Sketch or developers to run Xcode.
This is for production servers, processing Pixar movies, and YouTube features. It's a machine that will be expensed as the cost of doing business.
In any case, the only issue here is how they presented the pricing. They should have just said that they're selling a $6k display but if you don't want the stand, they'll sell it separately for $5k. If they framed it like that then no one would complain.