The very first episode of The Grand Tour (The Holy Trinity) was about how awesome hybrids are (the McLaren P1, Porsche 918 and Ferrari LaFerrari). Granted, those cars are worth over a million dollars.
BMW did a very similar thing with their 330e model; the electric motor is primarily used to increase the power from the relatively small engine that is normally only on the lower-end 320.
That said, my original statement was mean to describe the objective of these hybrid cars; any additional "fuel economy" is probably best described as a side effect.
And I think only 2/3 even had that option.