Folks don't buy safety items to become reckless, they buy them because they see/know/understand/fear the danger. It's what those systems do to us after we have them that is the issue. People slowly become less careful/attentive/etc as the danger has been reduced/mitigated/etc. It's not a change that folks actively do, it creeps in slowly to where we don't think about it any more. You can look around you and see people using the safety features all the time on items when they shouldn't be, lots of items on cars, sticking hands in elevators doors to get in there (they know it will open back up), etc.
It doesn't mean this happens in every case, but it very much happens. It's how people later get injured, they got so use to a safety system they begin to forget about it, be less careful, and/or if when needed one day it doesn't function right, they have let their guard down.
No one is just going to over night not care about the blade, it's a danger people see very clearly. But even if they don't consciously think it, most will over time be less fearful because they know the tech is there, they will be more likely to push just a bit closer, even if they don't think they are.
If you are business, the best path would pound safety in like a crazed shop teacher, yet have saw stop in the saws, but find a way the employees can't tell it's there. That is one of the downsides with it, you know a saw has it. If you had no way to know, you would always think of the horror stories.
