The maintenance seriousness in aviation is superior to an elevator, but even like that, the last human layer decision should not be avoided.
For example, bad behaving sensor feeding a fin balancing algorithm introduced by the manufacturer to avoid the need to redesign an unbalanced plane to accommodate larger motors it was designed for, and pilots unable to make the plane follow their commanding due such algorithm blind decisions priority... has crashed planes.
Total automation can be done quite safely in some domains. Between that and a completely manual/human-operated system lies the area of augmentation, which can both be a boon to safety if done correctly, or deadly if it leads to automation complacency or false expectations around the types of situations it can successfully handle.