What I pointed out was that a typical GA design would not fly if it had a glide ratio that poor, because of the relationship between glide ratio and lift to drag ratio.
Yes, you did so incorrectly, as previously demonstrated. The glide ratio is not merely the function of the L/D ratio of the powered airplane; the L/D ratio of the airplane with a windmilling propeller is not the same as one under it's own power (let's be clear; it's own engine power...before you run off another semantic rant). As discussed, a light single engine airplane may very well demonstrate a very poor glide ratio, yet perform admirably under it's own power with the same power to weight ratio as most other single engine light airplanes (and in one example you didn't seem to comprehend, an airplane which has lost 25% of it's thrust and was unable to fly, performed admirably without the drag of a single windmilling propeller and it's 25% thrust restored...that's just a quarter of the thrust...not even the difference between a complete power off glide and a powered climb).
The original poster was interested in airplanes that glide well, for safety, and the bottom line again, and for the last time is that he needn't worry. The distance the airplane can glide is superfluous and unimportant when considering if the airplane is safe. It's the pilot that makes it safe, and distance isn't at all important when one keeps a viable landing site beneath on at all times.
I've had enough of you. You're on the ignore list now too.