>dishwashers are NOT essential. they ARE an obscenity of waste, using 40 gal of hot water to wash a pile of dishes
A 2020 dishwashing study conducted by the University of Michigan found that the most energy-efficient way to wash dishes is the two-basin method, in which dishes are scrubbed in a basin of soapy water and then rinsed in a basin of clean water.
The two-basin method also got dishes slightly cleaner than a machine.
Using an Energy Star-certified dishwasher came in second in terms of energy efficiency and, notably, required less water than any other method.
https://www.consumerreports.org/cleaning/best-way-to-hand-wash-dishes-a1749842004//