Though Conley is often very blunt in the way he expresses his opinion, he knows what he's talking about based on experience. As opposed to many others who are just talking hear-say.
In this case, he is right, though I can't completely agree with him. For an experienced driver, having the tires with the best grip at the front is favorabel at almost all times. Oversteer is much easier to solve than understeer if you know what you're doing, especially on a fwd car with lots of power. But for many people on here, it will become tricky if they have the rear step out too much. Many inexperienced drivers catch the first slide, let go of the throttle, overcorrect and then counter-react too late. Thus ending up in the ditch anyway... For them, understeer is more foolproof and easier to solve.
So for inexperienced drivers (eg, people who don't have racing experience or done many, many trackdays) I would probably recommend having the best tires at the back.