In aviation incidents there isn't really a "blame", it's about finding all contributing factors and working together to eliminate those. The intention of invest

In aviation incidents there isn't really a "blame", it's about finding all contributing factors and working together to eliminate those. The intention of investigations is never to assign blame, because that stands in the way of finding all factors and improving them together. So the conclusion "pilots should check the automated data" is a correct one. It's not the only cause, but it is one of the factors and thus it needs to be discussed. In commercial aviation there can never be a single point of failure that could lead to catastrophic outcome. The performance calculations are such a thing, so there must be validation steps. In many airlines for example if the performance calculations are done manually (or by an app based on manual input) they need to be done by both pilots independently and the results cross-checked. Otherwise a single typo could have a big impact.