I'm sorry for Lewis because he was the quickest, no doubt. But the penalty was fair. After they've put not enough fuel they should say to Lewis "sorry mate,come back to the pits, we'll start 9th". Instead they decided to break the rule and hope they don't get a penalty. That's cheating. Giving 5 place drop, like some here suggested, would be very stupid - he still would be higher up the grid (6th) than while playing fair (9th).