I think your interpretation is right but I actually agree with the idea that you should avoid writing code if it's not necessary to solve the problem. It has n

I think your interpretation is right but I actually agree with the idea that you should avoid writing code if it's not necessary to solve the problem. It has nothing to do with letting the user know who wrote what code. It is all about quality of product like you say. For example, less code means less opportunity for bugs. And, using off-the-shelf solutions means more support resources will exist. Off-the-shelf solutions also let you draw on the knowledge of experts in that space rather than reinventing the wheel.