^^^ Power washer gets all that lose dirt off with no problem.
Also these cars are scratched and marred to heck. So if I introduce any kind of defect from washing you'd never tell.
I wash gently with a micro fiber towel, use DI water, air dry and polish.
My end product doesn't rely solely on my wash method.
I wash waterlessly, rinslessly and wet-N-wild. I wash according to the condition of the vehicle.
If you've used waterless wash as extensively as I have you'd understand that your technique is extremely important then rinsing a wash towel. So to me it's a waste of time, water & money.
But that's my opinion, I could be wrong.