I assume this behavior came from somewhere? I've lived with people that would leave bits of food on a plate when they wash it. But this tends to only be a problem when the dish sit there for a while, if you clean up immediately there is no need to be as anal about it.

Pro tip: Get a scrubber with soap in the handle like this, can't recommend them enough: https://www.amazon.com/Scotch-Dishwand-Non-Scratch-Friendly-...