No, "we" don't all know that.
Comparing the cost in miles of one carrier's program to another's is apples to oranges because different programs award and charge for miles/points in different ways.
There is simply nothing new here and in the two years since launch you could have accumulated a lot of miles on some other carrier of your choosing.
But, DL marketing people love to see threads such as this. It proves the point that people rant a lot, but they don't jump ship.