It actually hasn't been "banned" by the NHRA, and everyone seems to be backing off that talking point today. NHRA has had an exemption from the normal rules that required a roll bar between 10.00 to 11.49 seconds, along with the required SFI jacket, etc. in place for 2008 and newer production cars that are 100% stock for quite a few years now. That meant that everything had to be as it left the showroom, if you changed the tires, no longer stock, change to an aftermarket air filter, no longer stock, aftermarket ignition, no longer stock, and so forth. Anything changed you had to meet the normal rules. That was to accommodate some of the super cars, like the Ford GT, Mustang GT500, Viper, etc. that were capable of sub 11.50 et's. If you read the letter in the video you'll see that's basically what it says. What Chrysler did was spoil it for any of their Demon customers to try and at least keep their car under 10 flat and skate by for a while. Now any track can tell you right up front to put a cage in and buy the rest of the equipment since the capability has been demonstrated. Oh, and you'll have to get your NHRA license, which NHRA gets to collect their fee, isn't that convenient!
