So John, why don't you ditch your Power Cleans for a modern tall tub? You claim modern tall tubs clean even better with less water, noise and energy. So why not do the right thing and save the planet? You can even hand your Power Cleans over to me since I don't mind noise, water and less clean dishes.
Dishwasher longevity and reliability peaked in 1983 to 1991 especially with the introduction of the GE Perma-Tuff Potscrubber which was the pinnacle of it all.
Other than those being forced into using modern machines I have no doubt there is a substantial number of folks who like the increase in capacity and quietness tall tubs offer on the premise most of the dishware cleaning is already done beforehand. The inability of tall tubs and manual clean filter system to handle food bits does not make itself known to the user. You have to realize that, tragically, a large number of the population has grown up with dishwashers without fine filters, no or insufficient main wash heating, broken macerators, deliberately shortened main wash times, insufficient water change outs, short cycle times, poor water distribution, no upper wash arm (I'm excluding GE's pop up tower here), no power shower, bargain dish-washing detergents, hard water, undersized detergent cups, or a combination of all these things which has permanently conditioned people to pre wash and pre-prep their dishware to varying yet significant degrees.
Prerinsed dishware isn't going to matter in a tall tub, of course people will see whats next that being reduced noise and the feel good of perceived energy savings deriving hedonic fulfillment from these gains.
The Power Clean on the other hand with reasonable time, enough hot water and good detergent will out clean anything being able to provide a true level minimal dish prep. Scrape, load, and wash. You should not even have to pre-treat pots and pans. Load and wash. Water should never touch the vast majority of dishware prior to turning the machine on. The WP PC is capable of doing just that. As all dishwashers should.