I’ve seen these dummies absolutely fill a dryer, and then have to pay to run it a second time because everything’s still damp. So they’re spending the same amount, but wasting more time (assuming you have access to two or more machines, which usually you do if you’re paying for it).
I used to know a guy that was really stinky. I was hanging out with him once while he was doing his laundry and watched him cram clothes in to the washing machine with all his might, then leverage himself against the opposite wall with is legs to get the door to close. I told him this is the wrong way, the clothes will not get clean. “But water runs through the clothes! I’m not going to waste space in the washer!” When I pointed out that the clothes in the center of the impacted fabric wad was not even wet at the end of the wash he explained that this was because the spin cycle was so efficient.
Observe the fill line people.