My perception of Electroboom is that he makes it blindingly obvious why you shouldn't blindly copy him: as you say, he shocks himself in almost every episode. To me, at least, the message is that if you try to do what he does, you'll get shocked, and if you don't know exactly what you're doing, those shocks can kill you (surely he very carefully calculates how much he's going to injure himself?). I find that message makes me much more careful than the generic "don't try this at home unless you know what you're doing", where I don't really have a good way to assess whether I know what I'm doing.