Bernie Goldberg has a great take on the fundamental flaw in Brian Williams’s vision. A taste:

But the reason I say his problems started long ago, is because Brian Williams, think, never really knew what he liked more: journalism or celebrity. . . .
Journalists tell the unvarnished truth, or at least that’s how it’s supposed to work. Entertainers entertain. They tell stories that are interesting. And if they have to embellish, exaggerate or yes, simply make stuff up, there are no rules forbidding any of that. The only crime is not being interesting.
Williams was trying to fulfill both of his dreams – being a top-tier journalist and a top-tier entertainer. Oil and water don’t mix.