Responses
Its not rude even us living clean up after we eat a meal right? Its more rude to let the food rot there which result in the place being smelly and full of insect.
The idea is you are offering the spirit of the foods not the physical form. So cleaning the foods wont result in the deceased unable to finish the food
but on a serious note- it confuses me so much tbh what people do with the food after they offer it cause like isnt it disrespectful to eat someone's food?? like i refuse to eat food that has been offered like it feels weird eating it