The only thing Hawking knows how to do is steal other peoples ideas. Hawking's Radiation theory was posited by Russian scientists. Hawking took the idea and named it in his own name. M-theory has nothing to do with Hawking. Now he is trying to play it off as his own.

Hawking was wrong about the only thing that he came up with on his own which was that the universe's expansion should be slowing down. Wrong. It is speeding up. That means that the entire big bang theory is wrong. Now scientists don't know what to do so they invented dark matter to explain the expansion. If dark matter truly exists then it would negate the big bang. The big bang theory started when scientists noticed that the universe was expanding and figured that it could have started at a singularity. However, now it is uncertain because the expansion is not slowing down meaning that something other than a "big bang" was responsible. The entire theory is now falling apart.

Dark matter can't exist either. Matter can not be created or destroyed so where is it coming from to power the expansion? 1st law of thermodynamics says dark matter is a big no-no!