Hakumen players tend to be serious in general. Might just be the character :P
I agree that his counters should be relevant to his gameplay, but when you add it on top of all the other things he'll have going into CS2, it might be too much. Then again, it seems like Bang and Jin and a few others are going to come out of it looking good so it might not put Haku head and shoulders above the cast after all, and you a counter someone has to attack into is probably the last thing that would put him over the top.