I agree with what you wrote except the wick moisture part especially in the context of hiking and outdoors. Wools do wick moisture but synthetic fabrics do as well. They also dry very quickly, are light, can be worn in warmer temperatures, and often inexpensive. So using them for hiking and exercise is compelling. But there's a time and place for everything and I agree with you that it is better to wear natural fibers as much as possible as long as it makes sense.