Deliberate feeding of raccoons makes them more comfortable around humans and more likely to get into situations where they are unwanted or in danger.
It also encourages unnaturally high population levels within a small geographic area. This creates a higher risk of disease transmission among the raccoons and increases the likelihood they will become pests.
It is much better and more humane to allow population levels to adjust to the food and habitat that are naturally available. This is why leaving food for wild animals by your porch is not recommended.
It seems that these guys aren’t going to leave until they clear up every crumb!