Yes, it does. I really wish they'd left Spock dead sometimes. As enjoyable as the later films were, they never really hit the character stuff as well as the first two films did. Basically, Spock's entire arc had been leading up to him telling Kirk "I have been and always shall be your friend." In regards to his human half, he's gone from contempt to confusion to acceptance, and in that final moment he's finally at peace with both halves of his nature -- he did the logical thing in sacrificing himself, and the emotional thing in his goodbye to Kirk. But after his rebirth, he seems oblivious of his dual heritage, or at least not at all conflicted by it, which, while not forcing us to watch a repeat of the exact same arc, sort of robs the character of his alienness.
See, I don't think he's "more Vulcan than ever" after the rebirth, at least not for very long. Once he gets his bearings in Voyage Home, he's much more human in V and VI.