Quote Originally Posted by Qwertystop View Post
But at the same time, it's a world where bloodline and inheritance are made more-important by both sides of the core conflict – constant reminders that Harry is so much like his parents, his protection from his mother's spell making it necessary to stick with his only remaining family even though they're horrible people, he got his money from an inheritance, the Hallows thing at the end only worked because he inherited the cloak, and on and on. There was every opportunity to repudiate the whole thing about lineage being important, to say that only the villains believe that, but when it comes time to commit to what actually works in the setting... blood will out.

(and then he becomes a cop by the epilogue)
The hallows thing was immaterial to the conflict. The Cloak and the stone ware useful tools, but only the Elder Wand was material to the final conflict and Harry didn't inherit the Elder Wand, he gained ownership of it due to freak chance and the Wands own fickle nature.

Also, the protection on Harry from his mother an the protection on Privet Drive were separate spells. The protection on the house was a spell Dumbledore cast.

Otherwise, there would have been no point in keeping him there after Tom stole his blood to create a new body because that negated his mother's protection.

It's also important to note that Voldemort and Harry's choices are given more narrative weight than their blood.

Tom chose to be a murderer. To chose to split his soul into seven pieces. Tom chose to use Harry's blood to resurrect himself when literally anyone's blood would do. Harry chose to sacrifice himself to stop Tom and protect everyone else.

Those choices are what allowed Harry to come back to life after Tom killed him, not any special property of Harry's respective bloodline, and that was what allowed Harry to destroy the final Horcrux and defeat Tom.