This is meaningless because what "common sense" is changes person to person. The person yelling about how 5G will damage your brain would say that it's "common sense" that "radiation" is bad for you so 5G must be bad.
You're basically saying that the way you avoid doing something dangerous recommend by others is by already knowing that it's dangerous. Well duh.
I don't think most people getting into something the first time would reasonably try a hard project and make it harder by adding electricity in the equation. I think your example is really just absurdity to be honest.
I also don't know what point you're making.
Since some people can't tell who the experts are and what a beginner is, we need to regulate youtubers?
You're basically saying that the way you avoid doing something dangerous recommend by others is by already knowing that it's dangerous. Well duh.