I think it's fair to say that anyone who genuinley belives that double penalties are good game design, don't know what the hell they're taking about.
But allow me to give you further examples to demonstrate just how BS this system is. First up, we have Takagi Hills. A track that features several high speed turns that are close together. In this case, I was driving a Lotus Exige for the first time on Hardcore mode, and was trying to catch up to first place. On several laps, I'd loss the rear during the fast turns in the latter half of the track, and hit the barrier on the far side of the turn. Doing so is much slower than actually nailing the turn, as you'll at best be slowed down from 160-ish km/h to 110-120 km/h, and quite possibly loss control of the car. The penalty system, however, gives you a double penalty, resulting in not being able to accelerate for what feels like up to 5 seconds. It's not fair, nor is it called for.
Moving on to Kobago, a tight and twisty track that I drove in a Lamborghini Gallardo, which sadly doesn't seem to produce any downforce with that massive rear wing it has. Add rain into the mix, and it's extremely easy to accidently hit the far side of the turns with the tail of the car in the latter half of the track, losing you speed and time. But again, the HC penalty system gives you a double penalty, and prevents you from accelerating for what feels like up to 5 seconds. I lost count on how many times this happened to me, as I once again was trying to catch up to 1st. At times, I'd be too bold, and turn into corners too fast, resulting in me hitting the inside of the turn. And guess what, I get yet another double penalty. Because clearly, hitting the inside of a turn is so beneficial to my time...
So what is the point? In an effort to prevent people from going full speed into turns, Evolution manages to penalies every single driver whenever they hit a wall. And given that Hardcore mode is quite different, hitting walls is likely to be a thing until you've mastered the mode. In none of the cases I stated, did I stand to make any gains in time or speed, yet the game felt the need to penalise me. It's frustrating, and it's unecessary. It hurts legite players every bit as much, if not more, than people who cheat. And honestly, how many of the people who still play Driveclub on a regular basis, even bother with cheating?