That common knowledge undermines rather than strengthens his capacities for bringing people together ... setting aside the leap in the dark regarding believing that he has changed his ways and will be trying to bring people together.
After specifying that he is an able liar, we are supposed to believe that he has reversed his modus operandi by 180 degrees on his say so?
Indeed, even if he seriously intends and is 100% committed to changing his modus operandi ... he is entirely untested in that role.
Its like picking someone for the starting XI in the Ashes because he's the star pitcher for the Olympic Baseball team.
Better pick someone who has some runs on the board for that particular contest. I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.