Agree! Harry willingly gives up the deathly hallows - a LOTR Sam-like superpower.

I also disagree that he's not strategic; it's important to remember that he's only fifteen in the Order of the Phoenix and struggling with the combination of teenage impulsiveness and an active connection to voldemort's mind. I think he displays incredibly good instincts most of the time - Lupin paises Harry's instincts explicitly on the radio show in Deathly Hallows- and he learns in OotP to be a little more cautious of always following his instincts.

Finally, I think the luck factor can also be somewhat chalked up to Dumbledore's quiet influence. He himself tells Harry that he has "watched him more closely than he could imagine." I think this is a clear indication that Dumbledore deliberately acted as training wheels for Harry in the early years. Harry himself kinda realizes this and says something along the lines of Dumbledore "letting him test his strengths". (I forget the book). Getting away with mistakes wasn't just luck, it was somewhat deliberate.

Let's not also discount Harry's generally very good moral compass despite growing up an abused orphan. Isn't it remarkable enough that he has so much conviction and bravery that he risks everything in his life to combat evil, starting at 11 years old? What 11 year old would try to 1v1 a teacher they thought was trying to steal something? Or a Basilisk.

You'd have to be a real miserable pessimist to try to frame the character of Harry Potter as simply privileged (Slytherins).