I thought the steel tubing was part of the design with pencil stems, but I see I was wrong. It is a beautiful design, though it has always looked front-loaded to me, so I don't own one. Also, the better ones are decidedly pricey; they should certainly be reinforced.
Even standard width longer stems are fragile enough to be kept out of trouser pockets or anywhere they would tend to be leveraged bowl-to-bit and prone to being broken.
That's why short thick pipes are sometimes called pocket pipes and are inherently less fragile.
I'd glue that one back together, maybe with reinforcing tube and/or band added, and treat it like fine China.