This was also a big problem in the 1990s animated spider man cartoon. All the weapons were beam weapons, no realistic guns. In the arc with Michael Morbius (basically a vampire character) they couldn't actually say "blood" so instead they kept saying "plasma." Which was hilarious, having a vampire huddled on the ground "Need... plasma..."
The so called "moral authorities" need to realize that 1) Kids aren't that malleable. "OMG a child saw a cartoon involving a gun, now they're going to be the next Ted Bundy!!!!111oneone" It's reactionary BS at its height, and it's been said about EVERY new medium. Hell, even newspapers were said to initially encourage unwanted behaviours. Then it was music, then movie theaters, then rock and roll, then comic books, and now video games. The one thing that hasn't happened... if the "threat" of these things was anywhere near real then North America would have had itself a battle royale by now.
2) Animated does not mean for kids. This why 4kids drives me into unstoppable rage, the very premise of its existence is flat out wrong! Anime does not have to be for kids, and taking it and bastardizing it until it suits the incredibly watered down american standards for a "kids show" is a fucking travesty.
This lack of trust in their own children's reactions to anything outside blandness is why American kids shows have descended into such utter shit. From the epic years of the warner brothers cartoons, which were smart, funny, and made with jokes clearly aimed at parents and kids at the same time; now we have poorly animated tripe like spongebob and god knows what else.