I make my own clay stamps but I also sell them for people who either don't want to take the time or perhaps don't have the time to make their own. I see nothing wrong with that. Do you ever use a Giffin Grip? Or is that also something you don't believe in using? I think if there is a tool that can aid us in making better quality pottery a little easier there is nothing wrong with it.
As always I enjoyed your video. Keep making them, and we'll keep practicing!!