Nobody at the GMA desk knows what PVC is
That really tells it right there. Your newscaster heroes are paper cut out people, who have no concept of normal life. I randomly asked 100 people in a row, even small children if they knew what PVC was and every single one had an idea that it was a plastic pipe. Surprisingly quite a large percentage knew it was Polyvinyl chloride! Except the 4 mindless drones telling you how to think and feel each morning. That's amazing, I guarantee there's at least 16 years of college sitting there, so out of touch with reality none of them had ever heard of something I'd wager 99% of Americans have heard of. Whose the real One Percenters folks?
Then, the Weather girl knew, but was EMBARRASSED that she did!! Wow!