According to "Build things that last" author, 90% of the businesses evaluated are "customer first", meaning business listen to the customer and improve their produce based on that feedback.

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solid_fuel 4 hours ago | parent [-]

voluntary feedback - things like "I wish the customer service was faster" - is not the same thing as measuring engagement time down to the millisecond and using that data to feed a presentation loop.

	▲	charcircuit 3 hours ago \| parent [-]
		Engagement is measuring voluntary feedback. If you aren't engaged you typically either move to the next piece of content or close the app. These are the voluntary mechanisms you as a customer report how good the recommendation is.