I was actually being slightly sarcastic, because a few of the things you said seem to contradict each other.
My observations on your driving were simply that you're turning the wheel too far. Whether you do that on new tyres or worn tyres it doesn't help anything, even if wear isn't a factor it sets you up for exit oversteer because your wheel is turned too far.
If you do that on less forgiving tyres (like in a race car) it'll make it harder to catch; whether this is the reason you don't like the race cars in AC is pure speculation, but it probably wouldn't help. If you're only doing this because your tyres are worn (usually a good reason to NOT scrub the tyres, but you never know) then obviously ignore it.
None of this is a reflection on AC physics; as I said above I don't think you can judge that with videos anyway. Doesn't stop people trying of course.