It seems to me that you are trying to shift discussion from "should it be allowed to hang cloth outside" and "if I am forced to dry them inside is it good idea to use dryer" into "in a world where I am allowed to hang them inside, is the dryer absolutely necessary".
The answer to your question does not really matter, cause the topic the rest of us discuss is "should drying cloth outside be allowed".
Yes, and most of that drying happened outside. Also, moldy rooms and people having to deal with mold were a thing in the past.