A very even 8" of heating is better than most gas rings. Set it low and give your pan time to heat evenly.
I cook pretty much exclusively on cast iron (or enameled steel) and I can cook whatever, wherever, however I want.
Hydrolysis is very energy intensive. I don't like trying to store hydrogen, so you'd need an hho generator big enough to get enough flow to provide a flame that's enough to cook with. I can't think that would be easy or especially efficient electrically, as an induction cook top might legitimately more electrically efficient.
I've seen larger "professional" induction cookers that could easily handle a big pan.