This piece about plastic bags has valid points, but it assumes that cotton bags would be new bags. I use bags I own: one that belonged to my mother, one a military bag from the Vietnam era. I suggest making bags from used natural fabric, such as worn clothing or bedding. You need not buy everything new. Our culture once was a reuse and make-do culture, but the automatic thinking now seems to be to buy new. I stress using natural fabrics because manmade fabrics shed microfibers that end up in the ocean.
Another point about this article is that what appears to be an ideal solution is not always that simple. Willingness to change requires study and evaluation of a subject and changing tack when you realize you are on the wrong course.