It's funny to think that planes can ever be seen as competition for birds given the analogous trait of "flying". Reconsider the lede quip as "submarines are still decades away from displacing most fish jobs". What analogous trait does a submarine share with a fish? "Swimming"? Restore the quip to its implied context: What is the analogue between machines and people? "Thinking"?!

This is why I don't bother with Guzey. Slipshod imprecise reasoning.