That method is actually very dangerous and it is in no way an option select.
On hit > IAD > j.D(doesn't combo on normal hit so you are now in drive state with your opponent in no danger)
On CH > IAD > j.D(This combos, and it may look flashy for a while but is really nothing special)
On Block > IAD > notice that you didn't jump because 6A is not able to be jump canceled on block > get punished because it is too late to cancel 6A into anything
The real 6A option select is to 6A > 2B
On normal hit 6A > 2B(wiffs) but you are at an advantage because you recover from 2B before they can tech, you can not combo, but this gives you a chance to pressure.
On CH a 6A > 2B(wiff) will allow you to run after your opponent and combo into 6C(on a high up opponent) or 2A > 6C(on an opponent a little closer to the ground), and it looks flashy to boot.
On block, 6A will cancel into 2B, and if they block the 2B you are at neutral, which is Noel's way of saying "Push buttons at your own risk", this allows you to continue pressure.
Basically using 6A like this will allow you to instill fear in your opponents, and will make them afraid to jump in, except for Arakune, because his j.B just kills us.
It's safe, effective, and looks cool, and even has a higher damage output than 6A > IAD > j.D, so it's a win/win.