I think the media must think we are all stupid. I found an article from earlier in the year about a woman who found a mortar in her garden.
Mother-of-two digs up unexploded WWII bomb in garden and casually flings it on the rubbish thinking it was an old exhaust pipe
The article shows the found mortar and a Blacker Bombard, and even to the novice they are completely different. The found item is a post war M20 super Bazooka drill round and the Blacker Bombard is a mortar. Did they just make this crap up?