>The argument of EA is closer to: doing more of the things that currently feed 95% of the world is the way to feed 100%.

That is purely a political choice. Just grow the food supply faster than the population. Most developed countries have solved this on the population side. If every EU country had 0.5 - 1 billion people all of them would run into food problems.

By actually looking at how food gets produced.

So this is not a general property of EA, but only true for this field, as verified by a domain expert?

The same logic applies generally; the point is to apply the same things that have worked in every other field of human endeavour.