I can't weigh in on this topic as brake system engineering and metallurgy are not things I know much about with any authority.
But, I can talk about the intelligence of "Hellcat" owners and other comparable luxury/high performance category car owners. In these groups, there is a core group of highly knowledgeable people when it comes to car knowledge, far and above that of the average person. That group, is a very small group. Feel free to disagree, but I believe that the more expensive a car is, or the more special a car is, the less car intelligent the average buyer is (until you get into the supercar/hypercar group... they tend to know their cars... for every dumb rock star with a Ferrari, there's 50 other owners who live/eat/breathe their brand). Most people who know everything there is to know about a Hellcat, can't afford one. These are your teenagers and young adults who read everything about them, drool as they dream about them, and make friends with every Hellcat driver they see at their local car meets and drag strips. But, the majority of Hellcat buyers are the same group of people that buy Corvettes, Porsches, BMW M3/4/5s, Shelby GT350s/500s, and so on. Most of them can't locate the drain plug on their cars. They like having shiny things. And, most of them don't drive their cars but once every other month. They don't get these cars to track, modify, or to enjoy for the performance aspect. They do it for the outward perception. And, historically, at least from what I see as a broker, these people make up at least 75% of the clients I represent. And, many of them own at least 2 cars in the list I mentioned.
Of course, not all drivers of these cars are car stupid, but most of them are. That's how I see it. And, because of this, most people won't care how their parking brake is made... because I would be willing to bet that >50% of them have never used a parking brake a day in their life. So, this RacingBrake person is barking up a tree where they ain't no coon up it. Naw mean?