Not really, nobody really says that very short range airplanes aren't viable. I mean sure, some idiots might. But what most people mean when they say that electrical airplanes doesn't really work is simply that the fuel density of batteries are orders of magnitude too low compared to fossil fuels, and that it will pretty much forever remain cheaper to use fossil fuels and then just compensate with direct-air capture on the ground to reach the same 0 co2 emissions. Sure, some miraculous new battery tech might come and change that, but some miraculous direct-air capture tech might come and make the electrification of planes completely useless too. Airplanes (most of them) just simply doesn't make sense to electrify due to basic physics. Rockets is another application where the biggest downsides of electrification are some of the most important aspects.