It instantly destroys all credibility. Any serious theory would present itself on its own merits rather than going for the victimhood angle. When you title your book in such a way as to push the perceived victimhood to the forefront, it indicates that there is no convincing evidence and therefore the only option left to you is to play at the conspiracy angle, cursing the shadowy figures who are suppressing the "forbidden truth".

Why not just watch the talk and hear his argument from himself?

Wikipedia has a bias against everything outside of mainstream academia, there are activist groups like Guerrilla Skeptics that go through articles and rewrite them to undermine anything remotely fringe. It's not as objective as people like to think it is.