In one of my jobs (civil service) I had to pack and unpack a cheap dish washer, for a horde of unruly kids each day.

If you pack it orderly unpacking is a lot faster. It also helps to avoid problems with leftovers blocking the dish washer. Turns out most dish washer manufacturers thought a bit about how to load a dishwasher ideally (that matches the layout of the machines insides).

For home use with small amounts of dishes it won't really matter tho.