That's a great point, actually! George is a difficult guy to figure out. On the one hand, he really loved The Beatles and Paul and John (and of course Ringo), but at the same time he seemed the most traumatized by the whole thing. I forgot about the effect Yoko had on his relationship with John as well.
Here's an example of what I was talking about earlier. It's part of a transcript of the tapes of the Let It Be/Get Back sessions:
January 8th, 1969: George plays ‘I Me Mine’ to John for the first time. John snacks on food, opens Paul’s mail, and doesn’t pay much attention.
JOHN: Is that the end of it?
GEORGE: Yeah. It’s only that long—
JOHN: We can use it for a commercial. [laughs] So uh, yeah. It’s fine. And what do we do about that?
GEORGE: Um, well, it’s just a bit—
JOHN: It sounds so hard to do.
GEORGE: You see— No, it’s… no.
JOHN: I mean, for you.
JOHN: [falsetto] I me mine… You know, all that singing.
The audio: http://amoralto.tumblr.com/post/39803804848/january-8th-1969-george-plays-i-me-mine-to
It's no wonder the poor guy felt so insecure.