Pushing up against the edge of what is predictably possible in battery technology gets you a short haul Regional airliner. Its effect on the reduction global emissions will so low as to be negligible. It is purely an exercise in green virtue signalling, hence my comment that using the rare earth metals on 200 cars per airplane actually makes more sense.
Yes commercial aviation has to do its part and the obvious way is with SAF, that is where development money should go, not on electric airliners.
I have a part time gig working on electric airplanes for flight training. They are IMO the future of flight training not because they are green, although that’s nice, but because the typical training duty cycle fits the capabilities of electric power and because their fly over noise footprint print is 10 db less than a typical ICE training aircraft and most importantly they will succeed because the economics are going to favour them. Not using expensive Avgas creates huge savings and the running maintenance cost are about %20 of an ICE airplane.
So what is the cost per seat mile of this electric 90 seat airliner and how does it compare to an equivalent Turbo Prop airliner ?