The hot water with detergent is responsible for the cleanliness of your dishes, not the pre-rinse.
If you get into this habit, you are limiting the potential of the dishwasher, but you are also wasting a valuable resource: water. Simply scrape the dishes without rinsing them and then put them in the dishwasher to rinse.
To remove dirt from dishes, you can also remove food residues with a spoon or paper towel instead of rinsing them first.
This smart move prevents food from clogging up the appliance. Some high-performance models are equipped to remove even the most stubborn dirt.
In addition, it is recommended to use the right amount of detergent to avoid overloading your appliance, maximise its performance and use a water softener.
The latter allows you to add a good amount of salt depending on the water hardness. It is therefore important to know the limescale content of your water.