Glueball
Possibly a little difficult to be hard and fast about what's appropriate...depends whether you've got any significant transit time to the nearest airfield (and how short that runway is and what sort of landing configuration you can achieve). Or it may be that a ditching is the only option in a mid-ocean scenario.
But apart from those factors, the point that I was making above is that the overheating fuel-pump AD says that there's no problem in going ahead with an emergency fuel dump (for whatever reason). My contention is that they may not have thought that one through. No one argues about Land ASAP but equally a large percentage of smoke in the cockpit scenarios are pretty low key stuff at the end of the day.
I'm just posing the question of where the greater threat lies - in the extremely overheating fuel jettison pump "running on" (dry) after dumping all centre-section fuel OR in the LAND ASAP smoke emergency that statistically will "pan" out to be, with hindsight, just a cooked component. It's not difficult to turn an incident into an accident. Smoke in the cockpit promotes all those rush factors that can lead you directly through that statistical portal.