Your anti Manx2 stance, whilst informative at the start is getting really boring, and also ignorant now rab.
Captain does not have PIC until he has signed for the aircraft.
Some may argue differently. The Captain is in charge of the safe conduct of that flight long before he gets on board and signs off the loadsheet. Indeed all the way through the weather, fuel planning, ascertaining that everyone is fit to fly as far as he can etc etc he has the ability to stop the process. If, and its a big if as we all know nothing has been decided yet, fuel was an issue then the captain is the one who accepted the fuel load on the plog.
Who was the brain-box that paired a rookie captain with a rookie first officer? Given that circumstance and the weather it should have sent alarm bells ringing everywhere. The duty of a safe flight IMHO does not rest solely with the captain, the person who rostered the crew together must also shoulder responsibility.
This line of thought on this forum stil looks speculative to me. has it been confirmed? If so it is surprising. Flightline's Part A will surely have regulations on crew composition and experience levels. If they have been disregarded then indeed this is serious. But again surely this would be caught as a last ine of defence by the crew. Maybe we should all wait on official confirmation before this is debated further.
You seem to have very strong prejudice against Manx2. You may have good reason for this, or not. But ultimately you can't blame them for everything.