Zoe Main here, am i the only one who thinks performance wise she is still good? I still top dmg in my games, i still contribute to objectives and, i still can carry.
The REAL problem is pretty much unless you are really good at landing her skill shots you will have a bad time which means her accessibility just got taken down by a lot, much similar to Ryze where he is really good in competitively but no soloq because he is a strong team based Champion.
Then of course(and the most important thing), Riot is looking at a redesign of her kit atm so keeping her in this state until they figure out how to move forward with her is perfectly fine.
The only thing really we can hope for is that they find a solution before pre-season hits.
Overall though as far as her current state goes, yes she should have to land her abilities and until they finish her rework she should remain in this state.