Why isn't the media paying more attention to what Bernie Sanders says?

There is little to no curiosity among our media elite about how a Democratic candidate for president is able to campaign on a shrinking middle class, record highs of unemployment, record lows of workforce participation, record wage stagnation, and record entitlement dependency, while a Democratic president simultaneously travels around the country touting his economic success on all counts. How is it allowed to go unnoticed that this candidate suggests that economic growth was better under Richard Nixon than under Barack Obama?