The problems of using hydrogen are practically non-existent compared to the problems of using batteries. Even if you use half the interior volume of the aircraf

The problems of using hydrogen are practically non-existent compared to the problems of using batteries. Even if you use half the interior volume of the aircraft for hydrogen storage you are still in the realms of it being economically viable (though still challenging). 1lb of jet fuel has roughly 5kwh of energy. Of course you are going to get less than half of that out as useful work. But an airliner can carry 300000lb of fuel. So as a first order approximation you are going to need 10000+ Tesla battery packs to do the same job.