I fear this YouTuber is entirely sincere. The thought will haunt my dreams.
It's especially troubling that this woman claims to be a Northern Californian. And in fairness, she might have been heavily into drugs 20 years ago. Her recollection of sprinkler rainbows may have been clouded by hallucinogens. I speculate, grasping at straws in hopes of making sense of this science education epic fail.
So. Very. Troubling.
Hat tip to Skeptical Teacher, Matt Lowry.