I feel like the analogy of the camera would be more valid if Nikon designed a camera that was specifically designed to cater to the needs of child molesters.
Almost all guns are designed as weapons first and foremost. That’s it.
Fencing is a sport that allows people to duel each other. The foils are items of sports equipment - they have specifically been designed to not be lethal.
Guns, on the other hand, are not items of sports equipment. They are weapons that some people use for sport.
In the US, gun companies are quite happy to produce these for supply to the untrained, unregulated masses. And actively promote this as totally normal. I’d say they hold some of the blame.