My point was that there's no proof that tracks want to host this, beyond the existing facilities that already host Cup events. acmerocket is working from an unsupported assumption. The question isn't why didn't NASCAR go somewhere else, it's why LA? Because it's the second largest TV market, one that hasn't been visited by NASCAR since March 2020. If they waited on the Fontana reconfig, it'd be over three years since they hit SoCal. That's too long to be absent from a town that even the NFL has a hard time keeping interested.
I don't think it's too much to expect people to back up thier statements. The problem with telling others to do the research is when you can't find the source material, the original poster can blame you as a lousy searcher. "The info is out there; it's not my fault you can't find it," especially if the OP never had evidence in the first place.