It's confirmed... Zac micro manages more than the typical ADC does.
I don't get why Zac was nerfed so hard. The blobs that separates from Zac forces him to move back and forth for days. This weakens chase potential among other things. Why not just disallow Zac to absorb the blobs if an enemy champion is standing on it and revert the blob AI to live? That way there is counterplay to Zac's health restore but also gives Zac an easier time to rejuvenate. This would strengthen his jungle regen, but keep his teamplay/roam regen manageable.