I don't agree with that assessment at all. I think it would have looked ridiculous for Paul to put together some kind of super group right after the demise of the Beatles. George at least waited many years before taking that leap so it worked better. And even then it was more of a novelty act or something. I think Paul would be more than willing to share the spotlight if he found another partner he could fit with. I don't think it's so easy for him to go from the type of working relationship he had with John, George and Ringo to something subpar. He did try something with Elvis Costello. That worked out fairly good for both of them. At any rate, I think it's rough being a Beatle and NOT being the center of attention. Especially for Lennon or McCartney. You notice John was never into the super group thing much either. Other than for a joke. George was the quiet one, so of course it was easier for him to blend.
Also, I don't think he felt out of place because he wasn't the center of attention at the Concert for George. I think that had more to do with tensions from past relationships and things like that. He was pretty laid back and supportive. I mean, stick Paul McCartney on a piano so Clapton can showcase himself? I think he handled it pretty well. And another thing about the concert and Dylan. Why are people getting on Dylan for not appearing? He did his own tribute during his show at Madison Square Garden. He sang Something and spoke about his friend. I mean, does he have to go make a public appearance to show his respects? How do we know what he did in private? None of the Harrison family seemed to be offended about it. It was all Clapton's doing anyway. It was his way to make himself feel better. How many of them or even Beatles showed up to the Lennon tribute?