No, what she gets by "failing" her abilities is different from what she gets by "not failing" them. You fail in order to get something, and you dont fail if you want to get other things. What they are doing is just taking from her half of her kit, plain and simple. They are gutting the hell out of her, that's not a nerf, that's a rape.
I play a lot zyra, though, my main is zilean. And I'll stop playing zyra in order to play another AP support from 7.3 on.
EDIT:
This change will mean that she has to hit her abilities instead of hitting WW Q for free poke in lane.
Do you think that there is any problem at hitting her abilities? that she will not be able to poke because "she has to hit"? Lol, it couldnt be easier to land a zyra's Q in lane. That's not what they are nerfing with this change (they are going to nerf this increasing the mana she needs to do so, but that's another story). They are, like I said, taking half of her kit away from her, zoning potencial, pre-emptive plays, disengage, antigank power, kiting power.... they are fkng her HARD. It has nothing to do with "you have to hit your Q in lane".