Well, El Al 1862 crashed anyways, isn't it? You can't compare losing 1/4 engines to 1/2 of the massive GE9X engines and center of mass will be off by a lot. There are several crashes related to weight imbalance (usually cargo bay) and there is a reason why there are several precautions regarding how to load a plane. We also have the 737-Max, that needs a counterbalance mechanism to make it work.