I often notice you might be wrong and clearly a troll at this point. My argument is Pony Bottles should not be recommended for new divers. That's it. I then give examples for why they are worthless, and all you can find is red herring arguments like equipment choices, ascent rates, free flows. et al., because you cannot debate my actual reasoning.This is really the point. which the OP refuses to discuss. He'd rather argue that the free-flow should not happen.
Right here and now, prove to me why a pony bottle is a better tool than Minimum Gas Calculations and accurate dive planning and skills practice for a new diver.