I was following some way behind one of our NGs after holding due to an intense thunderstorm. We managed to weave our way around enough to make an approach and the field was clear. After landing the FO of the NG in front told me they got hit by lightning and all their EFIS disappeared. As they were stable and visual with the field they continued. If something like that happened to the Ethiopian crew in cloud, climbing and trying to follow changing atc instructions it would explain certain things. Not saying that it happened. But before we jump to conclusions lets hope the next report provides some more facts.