Stroked 318 power

Food for thought: if the factory had used the same stroker crank your talking about in the 318 back then - would be still call it a stroker? And why didn’t the factory make a crank like that? They would had killed it at the horsepower wars of the late early 70’s. Emissions?
They did sell stroker cranks, my buddy was running them back in the late 70s in his duster.