That view is one which many jurists use to manipulate the plain meaning of the Constitution to get the desired results - as opposed to a consistent and intellectually honest view which would show the Constitution is the highest law of the land and applies to the states.
The Incorperation Myth is one that has caused us a lot of damage over the years. That is all it is as well, a MYTH. It has no basis beyond what liberal activist judges have dreamed up.