The prop looks like that because you're viewing it via video; I think it has to do with pixel capture rates on digital cameras, which sample one line of pixels at a time. Or something. It's the same effect that makes video screens on TV shows appear distorted in a way that isn't apparent to the naked eye. The propeller was moving at normal speeds and the aircraft wouldn't be able to stay aloft if it were really moving as slowly as it appears to be.
The prop looks like that because you're viewing it via video; I think it has to do with pixel capture rates on digital cameras, which sample one line of pixels at a time. Or something. It's the same effect that makes video screens on TV shows appear distorted in a way that isn't apparent to the naked eye. The propeller was moving at normal speeds and the aircraft wouldn't be able to stay aloft if it were really moving as slowly as it appears to be.
https://jammerjoh.com/entries/in-english/an-essay-on-this-grim-reaper-thing
Dutch:
Ik zeg nep over de MQ-9 Reaper video
https://www.frontnieuws.com/ik-zeg-nep-over-de-mq-9-reaper-video/
So 'ufo' footage is 1940's quality resolution but this is in HD? Sure, why not. That aside, this looks fake as all hell even on a small phone screen.