The sport was desperate already from years of declining revenue but the backlash on this is pointing to a nail in the dead cat. They had already lost many top tier sponsors and many of the remaining lower tier ones will fade away as to avoid making a statement by walking away immediately.
They had already pissed of the fan base with the confederate flag ban. They have now gone full bore BLM. Any good old boy worth his mullet should not go near this woke sport.
Restrictor plate has slowly killed the sport. Early on it made it more exciting by bunching up all the drivers where no one had an advantage. Slowly, people have become bored with it, since every race is exactly the same and there is no need to watch anything but the final laps.
Good riddance.