It's a device which people use to make money (aka work). Do the math, you make $1k per month with this device, it's two months until it pays off an creates a profit. $500... 4 months and so on.
Problem is people want the best, even if they don't need it and then complain.
Same for the Vesa mount which isn't priced that badly. Sure you can find one for under $100, but then the screen wobbles around whenever you touch it (or the desk for that matter). Looking at high quality mounts that are actually stable, you're at $500+ from other manufacturers. You can find cheap microphone mounts for $50 and really stable ones for $300. You can buy a telescope mount for $1k to $1.5k and have issues in windy conditions or you can put down $10k+ and not have an issue. Same for the Apple XDR display for $5k/$6k and people complain about the price. Why not just buy that $35k Sony display instead that has worse specs?
Apple is targeting the pro market with this, for professionals making money with it. If that makes sense or not is another story, but that's what it is. Don't like it? Plenty of alternatives out there from Apple or other manufacturers.
Again, sticking to Apples terminology, fact is some people are not as pro as they think they are and therefore don't need their pro gear, even if they want it. Just don't buy it, problem solved.