Ban the new Dodge Demon...

Nobody is keeping the new Demon down. It doesn't fit the NHRA rules in stock trim and therefore can't run until the required equipment is installed. Same for NASCAR, the engine must meet the technical requirements or it isn't allowed. Just because it's badass fast doesn't mean it gets to run at whatever sanctioned event it wants out of the box.

BTW, Dodge knew that it wouldn't get past the NHRA in stock trim and built the car to accept the required equipment to make it legal.