I think the penalty is a bit silly, especially when your ruining a championship with it. Rik didn't do much wrong, he braked a bit late... but without any intention to crash. Just a racing incident.
Some other drivers did the same and didn't get a penalty for it... look at me on lap 17 for example, exact the same thing happened but no penalty applied. Why?
Also, if Kenneth wasn't driving like a tard again and spinning Rik (for his teammate or not...), this wouldn't have happened anyway.