More than 99.999% of all printed pages don't have the name of the person who printed them on them. I can't even come up with examples where the large majority of the material someone printed wasn't belonging to someone else, ie, printing a book, learning material, computer generated pictures, photographs, things like this.
"Printing a letter" is something I doubt anyone is doing in any meaningful percentage that this makes sense. A person printing a single small book they didn't want to buy is printing more pages just that one time than they will ever print with their name on them in their whole life.
What do you mean? I’m confident that 95%+ of the documents I print do not have my name, or the name of anyone who has ever been in my house, on them.