And a dishwasher is also a tool. You seem to be agreeing with the parent comment with a tone of disagreement.
A dishwasher is a machine, likely even more, but certainly not a tool.
I don't have to babysit my dishwasher to make sure it washes my dishes.
What is your point?
It's an unreliable appliance. You load the dishes and close the lid, it's supposed to do the work of washing them, but the actual engineering inside is too sloppy, so you have a non-trivial amount of persistent stains you'd still wash by hand. You might correctly conclude that if this fraction is high enough, the machine is more of a hindrance than an aid.
You might be putting too much dish washer detergent