Aircraft mostly don't need much torque. And, a reasonable mass of batteries still don't hold enough Joules for a generally useful flight.

So, given a beefy fuel cell and liquified hydrogen tank (bonus points for aerogel insulation), an electric motor optimized for energy efficiency is likely to be more useful than one optimized for torque.

But no kerosene-powered airframe will be able to compete with them, once they show up. Hydrogen turbines might outdo the fuel cell/motor combo, though.

Does it really help you if the engine weighs nothing when the batteries weigh a ton? Economically viable (battery powered) electric aircraft is sci-fi.

They are similar in power and weight to what e.g. Magnix and a few others are supplying.