To be fair, these are novelty promotional collectors items, not really meant to be trashed.
It's different from all the plastic packaging you find on every item in the supermarket, when they ban the one final plastic bag people use to carry all their other plastic bags.
That depends on what you mean by "worth".
Paintings and sculptures aren't really "worth anything" in pretty much the same way.
What's a movie "worth" for that matter?
Art itself could be considered the idea. The individual physical creation would be merely an expression of that idea. Does mass production dilute that idea or it's "worth"?
And I think that's our primary point of disagreement. I don't care how scarce something is.
In fact not quite 30min ago, I flushed something unique down the toilet because it was worthless to me. While the toilet I flush it with, is worth quite a lot to me, even though it's very common and and found everywhere in my country. In fact if it was scarce, even unique, it might be entirely worthless.