It’s better to say that the statistics aren’t changed much by increasing the federal minimum wage as it pertains to the productivity/pay gap. But one should acknowledge that for those making minimum wage it is a disgrace that it hasn’t increased for a long time and that it is far too low. Those people do matter. This isn’t just a discussion about statistics. There is a human element to the issue and morality is part of what one ought to consider when thinking about the issue.
EDIT: I edited my comment while you were responding. The discussion in the present thread is not about the dockworkers. It’s about the pay/productivity gap in the U.S. In that discussion a person said that minimum wage workers were irrelevant and that the minimum wage was just a political talking point.