My cleaning comment comes from experience. After almost half a million miles of EV driving, I'm intimately familiar with the lack of brake dust. But that isn't all that gets wheels dirty. I'm here to tell you that shiny silver (like your paint and my silver set of covers) *appear* clean and shiny for a long time....Silver hides a lot of sins. But the whites almost immediately show road dirt/dust. From a short distance they look perfectly clean and "just-polished" but they absolutely show dirt after just a few miles. My comment about cleaning white-painted wheels is an extrapolation from this.
That said, I DO occasionally use the brakes hard when I'm out on the twisty backroads. And I do get noticeable brake dust after 100 miles of that. Only way to be fast is to use the brakes hard! And a side benefit is that occasional real use of the brakes makes them noticeably more effective when you need (or want!) them.
