Is a save, follow or share a better metric than a view?
A save, a follow and a view each answer a different, limited question, so none of them is automatically the better metric. The media panel questioned judging content only by views. Start with what the piece is for, then pick the behavior that tells you something about that purpose.
A reference guide may invite a reader to come back, while an announcement may need to get an accurate fact across. A product explanation may support a later decision that the platform never shows you.
Every metric has a limit
Saving a post doesn't establish that the reader used the advice. A follow doesn't establish a purchase, and a view may not show comprehension.
Compare the metric with qualitative feedback and other permitted evidence. Two numbers moving at the same time doesn't prove one caused the other.
Use what you find to improve the next piece. See whether the material answered a real question and what the reader still needed. I'd treat a measurement plan as a way to learn. Swapping one impressive headline number for another teaches the team nothing.