I absolutely agree that cannot have been their intention. But I absolutely do think that's how it came across (or like meterolight8 elegantly said "they sounded a bit joke-y which came off like they weren't taking the event very seriously"). I think this is actually the 'root' of a lot of the backlash though most people are not articulating it well.
Agree, I doubt they meant it the way it came off to the fans, and i side with the fans, Nascar has their fans and if you give the "starting command" well they will go crazy, do it poorly and they will let you know it. I read an article about it and they portrayed it as Davis/White were booed because they were skaters - which was not the case.
If Charlie and Meryl weren't sure how to do the starting command, they should have asked someone or Googled it. I don't think the fans were classless thought.