I'm actually a little curious about how long it has been. Bad managers have always prioritized irrelevant metrics, of course, but I have a feeling (backed by no data, just vibes) that management in general crossed a point of no return as soon as "data-driven" became a cross-industry buzzword.
Like, I vaguely remember a time when consumer interactions didn't always come with a request to fill out a survey (with the results getting turned into a number and fed into a dashboard somewhere). And then that changed, and now everything must turned into a number and that number must go up.