Throw enough people at something, and one of them will fail. The more people, the higher the chance.

Perfect people in a perfect world would not need fire extinguishers, seatbelts, helmets, endpoint protection software, or TLD level blocks. You can try to train the problem out of people, but the threat still exists, mistakes can be made, and the next 0day might be just around the corner.

I’m not a fan of sorting people problems out with tech based solutions either - I see your point. The pragmatist in me will take that over dealing with the fallout of user error though.