You're correct but I think also missing a bit of what he's saying. When a car stops, the majority of the breaking is done by the front wheels. This is intentional since the weight shifts forward, putting more weight on the front wheels, and allowing more braking power in the front before you reach the point where the tires would break loose and trigger the ABS. This is why the disc brakes are bigger on the front of the car. What Jahysea is saying, is that when the front drivetrain is not engaged - and therefore has no physical connection to the regen, the front wheels still need to do more than half the braking, and you'd therefore still have to be using the front brake pads. On a hybrid or electric car that is front wheel drive however, the front wheels will always be engaged and therefore you can achieve your increased front brake bias using the regen. If your regen is only able to take place through the rear wheels, then in order to maintain your increased front brake bias you have to rely more on the brake pads.That's not really how it would work under most driving scenarios.
You are reducing the inertia of the entire vehicle through your drivetrain, caused by friction of your tires and the road surface.
Unless the amount of braking overcomes the friction of your rear tires and it begins to slide, which I doubt would happen from regen.
The only scenario I could think of where AWD would aid this would be if the road surface was super slippery, and your rear tires are slipping with even the slightest resistance.