>You can get hydrogen in cylinders. It has multiple industrial uses.
Of course you can but if you look at the ERoEI (energy returned over energy invested) you’ll see that it’s more efficient just to use the electricity to power the stove directly rather than attempting to obtain hydrogen via electrolysis. Hydrogen isn’t stuffed into bottles for free, it takes lots of energy to free the H2 from the H2O. Hydrogen when used in this context is a means of storage of energy. Unlike natural gas and/or oil/coal, hydrogen is not a fuel source.
“more efficient just to use the electricity to power the stove directly”
Some people like to cook with a flame.
“Hydrogen when used in this context is a means of storage of energy.”
Also, maybe mostly, used in industrial processes.