Opinion about washing fabric before cutting it
I am in the wash-before-cutting group.
In fact, I now soak fabrics in hot water for at least two hours before they get washed with a gentle detergent in cool to warm water on a short cycle. (Like colors together, in case one of them is a bleeder.)
Then dried "until done" in a dryer - or line dried when a dryer is not available.
My opinion is:
It is lengthy agitation and/or overloading in a washer and overloading in the dryer that cause that "used" look that is caused by the fabric(s) rubbing against each other that causes abrasion.
The fabrics should not be crammed or tightly packed in either the washer or dryer to have good results.