There's a reason why I designed my current house, and only took it to the architect for the final plans/structural review (and all he did was tweak a few window placements and find a way to not need a beam, so it was all good).
But I don't think it is the architects that are causing all this. You've got people trying so hard to handle disabilities that they completely forget common sense (and probably manage to frustrate those with disabilities anyway). You've got people with no sense of how plumbing actually works. But I think the hidden villains in the USA are the "home designers". You know, those folks that are wannabee architects but are are more, er, "artistically" inclined than otherwise. The people that used to be satisfied to be interior decorators, where all they could really do was waste money.
My wife and I toured a subdivision once where most of the houses had this closet laundry room opposite the master bath--the idea being that you've got these more or less "starter homes" with everything is convenient. You wash the linens, you dry the linens, and then you stack them on the nice little shelf in the master bath.
Except the designer was so in love with privacy that she put the linen closet in the same cubby with the toliet, which then had its own door. And the toliet cubby was near the bath entrace, which was directly opposite the laundry room closet, in a 25 inch-wide hall. (I always carried a tape measure when touring houses, for just such reasons.). Upshot was that to get towels from the dryer to the linen closet, you had to open and then close four consecutive doors. There wasn't room for the doors to be open without closing the next.
You'll note that this meant if anyone happened to be doing laundry, you had to open and close three doors to pee ... And when you closed that door to the toliet, there was barely room to sit, worse than the worst public stall I've ever seen. But if you didn't close it, you blocked all access to the bathroom for the spouse. It was like doing one of those 4x4 grid image plastic puzzles.
I asked the real estate agent why they had replicated this after the first house, since this occurred in the "show house" as well, and why the person responsible had not been fired. She just blinked at me. I guess she had gone numb.