I guess killing the patients as soon as the cut them open would be easier for the doctor :), but their job us to heal patients. Anything that improves on outcomes is good. The OP might have suggested that instead of new tools, just use the old checklist system.
There's also trust issue. Doctors, who like everyone can be opinionated, had to be convinced one-by-one that checklists actually work and are worth messing up their work habits - unlike the many other things people are trying to sell hospitals.
