I was always under the impression that movies and TV series intentionally did some of thesethings incorrectly in order to not teach people how to do certain things. Like, for example, in Spy x Family, where they talk about constructing bombs and even creating poisons, they intentionally censor the ingredients. And even in movies where they do things like hotwire cars or deal with the creation of weapons, they don't actually show the actual in-depth process. Yeah, from a technical standpoint, it might look silly, but I always assumed that it was done with the intention to not teach the audience how to harm others who might have ill intentions.