This isn't about labeling the target. It's about labeling the entirely unhelpful "just worrying", which they identify in the very first bubble. "Just worrying"

This isn't about labeling the target. It's about labeling the entirely unhelpful "just worrying", which they identify in the very first bubble. "Just worrying" about a final exam is an entirely accurate and useful label. "Just worrying" about it will not accomplish anything useful or helpful. Labeling it as "just an exam" may or may not be useful/helpful in some circumstances, but those aren't the subject of the PDF.