Muzzyman,
I wouldn't call the launcher arm "Flimsy", but you can bend it if you really wrench on one side or the other.
The prongs are nothing more than the ends of the containment loop and since they don't have a close point of attachment the will flex a bit if you pull on the ends.........even if you do so (I did it to see) they spring back to their priginal position. I think you would have to really pull sideways with some force to cause a permanent change.
I don't know if they beefed this arm up or not, but after shooting it for some time now I don't think it's totally necessary.