This is a funny joke and I don't want to ruin it, but I also don't really see it as a paradox. Things should follow the rules of the world they're set in, it's about self-consistency. If (when) a movie version of a fantasy or sci-fi book or comic or something comes out, and it gets a bunch of details wrong, or does something that should be impossible based on established rules of the franchise universe, that's just as bad. Something set in the 'real world' should obey real world physics. Otherwise don't have them flying a real world plane, make it a spaceship or some futuristic propulsion plane or something and that's totally fine.