Squawk-7600,
I'm not trying to implicate the operator, the manufacturer, or anyone else. I'm pointing out that there is a multitude of possibilities. You, on the other hand, seem to be implying that the fault can only be 100% Boeing.
(You also imply that I know nothing about the refuelling of modern a/c, and have never done it. Isn't that somewhat presumptious?)
If you've deliberately got airborne with fuel that "has become trapped in areas we don't want it", I don't call that "just tough luck". But I can think of other ways of describing it.
On the other hand, to suggest that any need for manual intervention in the refuelling process (because the automatics have hiccupped) would invariably mean its being "wheeled back into the hangar" is plain nonsense.