Yet, he's helped me/us do dishes many times, but never actually washed them.
I have a simple process - put an inch or two of hot water in the sink with soap,
Wash a number of items, placing them back in the sink,
Start the fresh in a hot slow trickle,
Rinse each washed item, then put it on the towel on the flipup to the left,
then
The lovely N picks up the rinsed item, drys it and puts it away.
Simple.

I took this image as "and Steve" was not with us, so we texted the image to him, and stated it was his turn to do the dishes.

He didn't show up to do them.