The planes may not be the problem.
May not isn’t good enough when two of the exact same model, the most new and most modified, go down in the exact same manner inside of a few months.
It is either a flaw with the software, or a feature of the software that has not been properly communicated to the carriers flying these jets.
Either way, “may not” isn’t good enough. The program is binary, it’s either right, or it isn’t. There needs to be some definitive answers. If it’s purely operator, then Boeing better lay out the case. Quickly. Nobody wants to spend the first 15 minutes of their flight wondering if it is going to go out of control with a pilot who hasn’t got proper factory emergency procedures for when the maneuvering characteristics augmentation system goes buggy.