Having just read the last three Harry Potter books after a long break from the first and having seen the second movie with my grandkids, I see exactly what you see in Harry. This is the essence of healthy, i.e. ethically good, spiritual training. The directness of this and its sophistication in a magical, juvenile series that is particularly well written impressed me.
This is one of the spiritual tales for modern understanding that is, I think, a large factor in the major break with the past that we are now seeing as as the millennial generation begins to cone of age. As identified by another responder here it clearly identifies the nature and failure of institutional greed as justified by archaic religion in its decadent modern form. This stuff needs to be clearly identified and put in its place with unselfish and selfless commitment. But that requires equal effort at recovery and restoration of people suffering from their manipulation. We all must keep growing and moving forward away from our past failures.
Along with many others I see the rapid reduction of old religions not from simple denunciation but from active, cherished, improved, replacements. Harry Potter is part of this.