All tools are handled by humans but no manufacturer/designer can account for every human or how the tool is used/abused by the end user. The fact that Glock require the trigger to be pulled for field stripping and some other designs don't is a choice that allows for less error but is in no way unsafe. It can be done repeatedly safely and is described in the manual how to do so and is done so probably millions of times now by hundred of thousands of users across a broad spectrum of ability without issue.
If the gun industry or any tool maker was to take subjective idea of the lowest common denominator and safest tool use into account we probably would not have power tools,automobiles or guns beyond DA revolvers, you know just to be safe. If you want a safe semi auto then a true double action only hammer fired design with the longest heaviest trigger pull would fit the bill. However the vast majority of military s, police agencies, and individuals choose and chose to balance safety with the gun's intended purpose (to shoot and hit targets/threats). This is a significant reason why Glock is the most common handgun worldwide and striker fired guns are so commonly used.
My comments here and before are in no way intended to attack or denigrate your position or any individual's or agency's choice and concern about designs that offer a smaller safety margin. I comment to keep separate personal subjective concerns from objective reasonableness as it relates to design. I fear the day when a manufacturer of any product is required to meet standards of a person is unable to harm themselves with their product regardless of how careless they use it. The recent Gorilla Glue hair fiasco is just such an example.