'ChooseTheDrew', I didn't realise you were 18.
Batch reheating food with limited equipment (and space) seems to require more skill than heating a microwave 'ping'. Even warming up homemade food (in a microwave) for several people requires juggling to get everything at a perfect temperature and keep the consistency right. Staff have to be trained, supervised and managed to care about what they serve. Again, BA's inconsistencies suggest something is severely lacking.