Common sense (what a novel idea) should dictate action.
For example, the only time I have had a GPWS alert was on approach to AUH, runway 13, VMC, daylight, at about 4000 feet.
For those unfamiliar, this is over the Arabian Gulf, not hills.
The First Officer (PF)...says "stupid box, no terrain here" and I concur, so we continue descent, land, and put it in the logbook.
Now, if at night, over land, IMC or VMC...different story.
But of course I can see where those at BA just might have different ideas. Wonder if there is any common sense resident there?