Fully agree. And we all know beautiful but totally broken UIs and UX, and "ugly" but extremely functional UIs and UXs, that actually make them beautiful
If any of these were functional, most users wouldn't care about the visual appeal. NN were correct, but apparently their message didn't reach that particular sphere of web application developers.
The productivity drain of a poor UI is largely felt by the customers' employees, while the vendor benefits from sales of professional services and premium support contracts.