“...they can’t understand why the outcomes of their decisions are bad.”
That’s just it, though.
Libs don’t connect their own Cause to the Effect their policies create. When their policies inevitably fail, it’s always because, ‘the wrong people were in charge’, or, ‘those nasty conservatives obstructed our good works every step of the way’, or some other nonsensical excuse.
They never analyze what happened, using their simple powers of observation, and fact based reasoning.
Moral Foundations Theory explains this.