That analogy breaks down immediately because it's missing the critical novel component: the AI.

In the bathroom remodel analogy, the AI is the plumber that you hire to do the work for you. You tell it what you want, it figures out the details necessary to get it to you. If what you want isn't possible, or requires large changes, a good plumber will raise the issue to you and explain the constraints they are working under, ask for guidance, and offer recommendations.

Sometimes the AI does things in a weird or inefficient way, or neglects details that become important later, or misunderstands something important about the task resulting in an outcome other than what you wanted, but that's also the same as the plumber. This is why people usually want to be at home and keep an eye on the people working on their improvement projects or repairs, because they want to make sure that the guy they hired is replacing the broken faucet, not the functional but odd-looking one.

There is still value in knowing the underlying systems well enough to present a good design vision to the plumber up-front. It's still possible to have a competent executor produce a bad idea, which is how we get stuff like Groverhaus, the Doom Bathroom, and McMansion Hell, which are examples of "slop architecture" in exactly the same way as we are seeing "slop software".