rolls eyes
Apart from the fact that his hosts, his own legal team, and Swedish prosecutors have all publicly vouched for having interacted with him in the past couple of days and even Pamela bloody Anderson has met him since his last "proof of life", none whatsoever.
Also, there is not cryptographically sound proof that I am alive, so it is not really speculating to suggest that you are interacting with a ghost.
This particular ghost finds it pretty hilarious that anybody could consider it plausible that powerful people wanting to kill Assange would form the largest and unlikeliest group of conspirators ever and then drip feed as much information drawing as much attention to his situation as possible to the press after doing the deed, and consider it unlikely that Assange might do something to elicit shock value.