Hydrogen infrastructure is a lot more expensive and not as easily deployed as charging. You can charge an electric car on a regular wall outlet, but you need fuel stations for hydrogen. Hydrogen fuel cells are more expensive. Hydrogen cars are EV's with a smaller battery (yes they have batteries as buffer storage), but with the added cost of a fuel cell and tank. It is also a lot less efficient. You're only going with hydrogen when batteries can't hold enough energy.

No hydrogen isn't needing more funding to be more efficient. Hydrogen is still needed, but you are always going to convert energy more often than just charging a battery. Energy conversion isn't free, so it is always going to be less efficient.

EV's also have the added benefit that they could be used as grid buffer / storage when plugged in or as a backup for your house

The short version is: charging speed matters less and less if your car is plugged in long enough and when it isn't driven far. If you come home with 100km missing even a slow charger is going to fill up your car in the hours you're at home.