Scientists Produced Hydrogen Fuel with Nothing but Light and Fats

Here is an interesting article on alternative fuel. Feel free to add your thoughts after reading.
I am all for the development of new fuels. This method transforms water and sun into a useful energy source with 0 emissions.

https://futurism.com/scientists-produced-hydrogen-fuel-with-nothing-but-light-and-fats/amp/

When electric current is passed through water it liberate hydrogen and oxygen. But this light in different frequencies is a new thing, and it's very cost effective indeed

Is it not odd that this is not mainstream? This method may be relatively new but hydrogen is not.

Some may say it's because of the control that oil industry giants have over energy but why don't they just corner this market as well? Much like big tobacco is doing with the vapes. They lobby for restrictions on vaping and make it tough for small businesses. Shouldn't the oil industry do that rather than suppression?

Maybe brother it's the lack of data or proper research. This oil is a fossil fuel gotta get finish at one time from the rate we are using it or wasting it. Now they are sensing this fact, so now they are working.

I guess I'm just thinking proactively.