KitchenAid dishwasher at 0:22. Those bags of compacted trash may comprise 1/6th the physical space than not-compacted but they have the same weight. I recall someone, somewhere years ago commented that the compacted bags are heavy.
Trash compactor bags are heavy. We used a Lady Kenmore for a while. Our city provided trash can is large. We put one or two kitchen 13 gallon bags in it per week. The collection trucks compact the garbage anyway