There's also a huge difference between ignorance and plain stupidity.There's a big difference between taking a calculated risk in the pursuit of knowledge and plain ignorance.
It beggars belief that someone could reach adulthood and not have been exposed to the idea that electricity and water is generally a bad combination. So this wasn't ignorance, it was just plain stupidity - the gentleman in question could have delayed either charging his phone or having his bath but wanted it all.