You could have substituted "NHRA" in place of "NASCAR" and have a hard time telling which sanctioning body was the subject of the video.
The attendance part for NHRA hasn't been really strong for a long time.
I've attached two pictures, shot at least 15 years apart at Texas Motorplex. I've attended many national events there, usually from the same seat.
I'm not exactly sure of the year of the first picture. But, it's not after 2001.
The second picture was shot at the 2016 race.
There's just not a whole lot of difference.
In the late '70s, or early '80s, either Car Craft or Hot Rod Magazine had an article which said "the year 2000 will probably see no drag racing."
I took both magazines at the time and can't remember which said that. But that quote really stuck in my head because that was the time frame of soaring fuel and insurance costs. I had a feeling it was going to be prophetic. Thankfully, it hasn't. Yet.
But I don't see drag racing going away completely. I'd like to think that as long as there are two people with cars, they are going to see which car is fastest. And I want to be there to watch.