This often involves being deceptive, which would explain both of your points. For many people, status is everything and it doesn't matter how they get there. Selling yourself is often more important than having the actual skills required for a position.

And let's face it: Not everyone at Google needs to be a rocket scientist. We've also seen how shallow Google's hiring practices are.* Ticking check boxes is more important than correct answers, which perfectly fits with everything we're currently seeing.

* https://news.ycombinator.com/item?id=12701272