That would be the answer in search of a question. Not only is the quantity of water used much smaller, but the soil concentration in the water much greater than a wash fill from a top loader as would be the waste dyes, probably making the wash liquor unsuitable for washing anything except rags and cleaning cloths .  

The closest a tumbler washer came to reusing wash water was the design where the machine was a horizontal tank with a rotating basket, a cover over the tank and a wringer at one end. Some were known as "Cabinet Washers." Maytag was among the manufacturers who offered one.  These machines were among the transitional machines between wringer washers and cylinder washers from which the first automatic took its design. Along side these machines were machines like the 1910 Cataract which was a boat-shaped tank with a ribbed bottom.  Laundry, soap and hot water was placed in the tank, the lid closed and the motor started which caused the tank to rock side to side.  After the washing, the load was removed and put through the wringer then the next load was put in the machine.  All of these machines used more wash water than the early front loaders, however.  One of the points raised by the testing magazines about the Bendix Automatic Home Laundry was the amount of hot water required versus the hot water heating capacity in the average home. Washing machine manufacturers who did not offer suds saving devices countered that each load was washed and rinsed in fresh, clean water.