That's assuming the pantograph is done by the people who made the stem, not someone after the fact (who may or may not have art more in mind than structural integrity). Not that I'm necessarily disagreeing with you, just have seen some panto'd stems that really look like they were done by an amateur. Pretty, but spacing with manufacturer's stampings seemed off, so I'm not sure how it's a planned design feature that is in tune with what the manufacturer feels is safe.

Edit: changed the word fork to stem because I'm not sure what massive brain fart made me write fork in the first place.