Hi, I'm the author, it me. You're right, I need to be clearer that golden ratio doesn't automatically equal beautiful. It's not sacred geometry. It's just pretty. I like it. And studies show people at large tend to find the proportions pleasing.
It's just a rule of thumb, that's all. I just went crazy on the copywriting because I thought I'd need to in order to get the kit to stand out.
I have now been extremely informed that this is not the case.