Why use DCF for stuff sacks and pack bags?

DCF stuff sacks and pack bags seem very popular and it’s clear that a lot of people are very happy with them. However, I don’t quite understand why you would use DCF for this purpose.

From my research, the main advantages of DCF are its high tensile and tear strength. This makes perfect sense in a tent where the fabric will be subjected to a lot of force but I can’t really see how a stuff sack or pack bag will see enough force for this to be a meaningful advantage.

The main disadvantage of DCF is its poor abrasion resistance. A tent is mostly exposed to air and rain water so it will not experience much abrasion. While you typically don’t drag your bags over rock slabs, packing and unpacking items as well as having contents rub against the fabric over and over again must surely decrease the lifespan of them?

Is there something I’m missing here?