If the opponent is going to play like a paranoid wreck and d1 KL after a 21 on block (when he is already 0) to get +1 advantage (on hit), then fine...because If I block after 21 (or any combination of string) and you guess wrong with your d1 afterwards, then you are back right where you started.
When people finally realise that this is how he is played, then they will see how devastating Kung Lao has always been.
Using D1 or D3 as a counter to KL's block strings is not the definitive answer on how to get out of KL pressure, it never was, it's not as simple as that.
Opponents can't just D1 and D3 everything all day as if they are just allowed to do it against KL and he ''can't do anything about it'' you couldn't be more wrong,
A good Kung Lao player will want you to D3 him after everything.