Hi Dude,
Of course it is always the Capts final decision to accept a flight plan. If the company that has been tasked with the planning cannot do it efficiently or safely then get rid of them and find one that can. When you're working hard in the pointy end, maybe weather issues, or technical issues and perhaps facing a divert situation, your mind should be wholly focused on the safe operation of the aircraft, and not having to balance out a whole load of hassle if you do have to divert with handling, surface transport for your boss in the back etc...The Egelsbach accident was really down to bad decision making by the PIC which seemed to be hindered by the overwhelming desire not to divert knowing that to arrive at EDDF without any provisions being made is a nightmare. A decent ops team would have everything already set up at your divert before you arrive. The pilots principle task is to ensure the safe operation of the aircraft. Nothing should ever detract from that basic task.
FNPL