Superworms as a staple?

[Eragon3]

I've had my boy Henry for almost a year now and he's always been fed superworms as well as his daily salad. However, a fellow keeper told me that superworms should not be used as staples for adult beardies. My roomates are not fond of roaches and he doesn't seem to have an interest in crickets. I just wanted to check the validity of this statement.