The Ancient Greek
Not only are you totally out of order, if you conducted yourself as you describe in a real life situation say with a member of my family who was flying upfront with you, I would haul your ass through every court in the land until I had the very shirt off your back. Pilots are Pilots, we are not Doctors, no matter how many documentaries you have watched or web pages you have read to make you an \'expert\' ... Not!
The completely correct action was taken by the FO. Divert the aircraft immediately, hoping the poor guy is not dead and that onboard assistance and expert medical help on the ground can save his life.
Condolence to the family