Oh ffs. Every time this question gets asked, I fail to find the article showing they did have the cornucopia, with verifiable pictures, and tried to cover it up for some reason.
Yes, it's a conspiracy. No i don't remember why. Products with the cornucopia still exist, but they're rare, no longer being made and with ai crap, unreliable proof even if still found.
I don't know if they keep trying to erase the proof or it's just the internet randomly and naturally burying it through its regular activity, but all I can do is tell you it was real and you're not misremembering it.
History will likely be erased on this one, eventually.
