The anecdote is specific to frogs (and animals with similar sensory systems), and specific to boiling by increasing the temperature in small increments.
I have just heard about Seneca dying in a stem bath, but that was more by accident (he committed suicide by cutting his wrists but that was taking too long so he wanted the heat to speed up blood extraction. He however died of suffocation)
How was that suicide supposed to work? (suffocation like Seneca did?)