I would also like to add. That if you had been a professional pilot, you would not need me to explain this to you.
That you clearly do not understand the decsion making process on a flight deck concerns me. It is not rocket science. That is just the way it is. Not only in BA, but in every airline, and outfit I have ever flown with.
When all the information is in. It is the aeroplane that is strapped to his rear end. Not some bloke in ops.
The buck stops with the Captain.