The reason WP-Kenmore had to have the spray rinses was to try and spray off the stuff that settled on top of the load as it drained. Even after the rinse in a DD, if it drains without spinning, the funny stuff on top of the water if softener is used settles on the load which is why the machines started the final spin with the powerful spray rinse. This is not to say that perforated tub machines like GE and Maytag did not redeposit stuff on the load, with water slopping over the top of the tub as it spun during drain and they used spray rinses after the wash also. Even solid tub machines, as soon as they begin to spin, will move the suds near the agitator down against the clothes as the water near the outer edge of the tub rises to be thrown over the clothes and into the outer tub or cabinet. Speed Queen with its long overflow at the end of the wash period COULD float all of the suds off the top of the wash water before the loud solenoid bang that began the spin/drain.
Of course, in the early days of doing laundry when soap was used, wringer washers dealt with suds and any soap curd best because the items were lifted out of the water leaving all of that behind. The Bendix Automatic Home Laundry had trouble dealing with that in its small cylinder, but once low sudsing detergents came on the scene, a tumbler washer that drains the water away and tumbles the load either continuously or a few times during drain seems the best at coping with both heavy and light, suspended soil without having it get back on the fabrics. Older WH machines with the powerful flush rinse that sprayed directly into the tumbling load after the wash drain were very effective at knocking down any remianing suds without spinning them into the load.
