And yet, we see articles like this Worldwide Mac Sales Hold Steady as PC Market Sees Shipments Decline 9.6% in Q1 2016. Not saying we should be celebrating the current lineup, but Apple probably feels the data supports their choices.
And that's because their consumer mac lineup, no matter how technically outdated, is still tremendously popular. This is the issue for those of us who depend on Apple for heavy computing. There aren't enough of us to matter anymore.