Although I do agree that Ron would still fear spiders, and Neville (bless him) still has Snape issues, but I wondered if it would be different for Harry.
His Patronus is strong, so he has a way of defeating Dementors, and didn't Remus Lupin comment on it being good that his fear was fear itself?
Therefore, what I'm saying is after POA he wouldn't have the same issues with Dementors that he had, and wouldn't the real Voldy make an imitation Boggart one so insignificant as to make it almost amusing?
Raven, I love your suggestion post DH. It sent a shiver through me remembering.
Thanks for answering folks, I had/have a need to discuss it with fellow Potterites.