I never said it can’t be done technically. I said you can’t store it, because you can’t store it. I also said that it makes metals brittle, because it makes metals brittle. I also said it was more expensive than hydrocarbons.
These are fundamentally economical arguements, because you’ll have to fill up more often. You may have to replace the metal parts of your fuel system more often. It costs more to use than gasoline.
But I never said it cannot be done technically. It just may not be possible to do it economically. If you read my posts on this, I said that hydrogen is a better alternative than lithium because it acts similarly to hydrocarbons and there is no pollution.
It’s just expensive to do, that’s all.
“I also said that it makes metals brittle, because it makes metals brittle.”
Not all metals.
I was a tech on O2 generators. These generators used metal to confine the 3000 psig hydrogen. Metal piping was used to vent it overboard.
You said hydrogen embrittlement would destroy vehicle tank. FYI, those tanks are composite materials, not metal.