And whether people want to accept it or not, in the era of the gun, weapons such as swords become historical relics.

Arguably, they were responsible for the ending of the relevance of the samurai in Japan.

People who don't understand firearms typically demonize them as inherently evil and as taking the skill out of martial arts. Anyone who really pursues firearms skills as a martial art or for sporting purposes or whatever, quickly realizes there is a great deal of subtlety and nuance to learning to use them well.