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He has no shares (or has at least publicly claimed not to).

sounds like it validates that this is about him pursuing profit too hard / inappropriately.

He's sarcastically pointing out that he has no personal profit motive.

Who knows, money is not the only thing that motivates us. Power, influence, fame, ego etc are the thing that drives people too and can blind them.

absolutely, hence why it's a bit disingenuous on his part to make that point in that way (assuming that was his point).