I don't think I know anybody who would regard a copy on CD as hardcopy. (Well, unless the material is printed physically with ink on the surface of the CD! But I have never seen such a thing.) I guess none of your pen friends in the US works in IT.
You need a software, although maybe as simple as a notepad, to read the files in a CD, and by definition, this is soft copy. CDs are not permanent, especially those you burn with your own CD burner. The data become unreadable easily if you do not take good care of them. Try putting them under direct sunlight, you'll lose your data in a couple of months. Even if you do take good care of them, you'll still loss your data on some low quality CD/DVD in two or three years. Don't count on them as your only archived copy especially for your valuable photos or videos.