*In my opinion, the biggest problem with the google-style interview (other compa...

In my opinion, the biggest problem with the google-style interview (other companies do the same thing) is that you can practice and get better at it.

You can get to be a better programmer, by practicing, too.

If the system is easily gamed, and they know that, and you know that then failing to game the system shows a lack of motivation.

So, perhaps they're not selecting for what you (or even they) think they're selecting for.