@Azure I guess engagement always was measured by screen time, and/or amount of "content" scrolled by. It's a measurement of how much ads users will see. By maximizing such measure, you optimize a source of income. It was never a true form of "engagement", but it resembled a primitive form of "engagement" with the platform. Continuing to call it that way was a mistake.
Why are people still called "content creator" and not "entertainer of audiences"? Couldn't it be updated?