Back to the OP. Sorry if this has already been said but life is too short and too busy to read seven pages 
Johnson is waiting. With the new PM anointed, this walking ego will see his job as undermining her. She - it looks as if it will be she - will have to about turn so quickly her head will spin. From appealing to a tiny, mainly old, mainly white, often racist, mainly male selectorate, she will have to go back on so many things she has said as she now attempts to appeal to general voters. These being the general voters she has often slapped in the face to get the leadership.
They say you cannot kid a kidder. In the same way, a simple liar will not be able to outwit the greatest narcissistic liar in our parliamentary history. He will see his only job as undermining his successor, thus protecting his very, very large ego.