And one has to wonder if they have the same circuit breakers we have here in the states.
Tub water generally won’t throw a circuit breaker @ 120v. Doubtful at 240v.
A circuit breaker without gfci will not trip on current imbalance. Additionally gfci depends on there being a better grounding of the tub, than the neutral on the cord (assuming L and neutral only for Russian iPhone chargers).
You can run a hairdryer in the tub water in the states with gfci, as long as the drain is ungrounded.
Case in point: humidifiers. You have to salt the water decently in that little tank before the line potential can deliver enough power to boil the water.
The electric field gradient the in water actually causes the electrocution I would guess. Ie. the the voltage potential to ground measured at two points in the water is enough to flow current through the body of the victim.