Place I used to dread working at used thousands of self drilling/self tapping screws. Purchasing decided to buy the cheaper ones, in bulk.The usual reason for adding material to wrench designs is a change to weaker material. Some bean counter decides to save money, while not realizing that it will require more material to do the same job. Robert McNamara was a prime example of this mentality.
Exactly a "Robert McNamara" decision! The sad thing is, these idiots "fail upwards" and end up with ever greater responsibility!