to indicate zoro slowly getting used to emma. Doesn't mean he's completely adept.
zoro is aware that he is killing himself when using emma...
he is just unaware he is using acoc
no
zoro used 3 swords with haki throughout the post timeskip. Never had any problem. Only emma sucks his haki out. He can just spread the sucked out haki to the other swords.
Go back to when he got emma. His arm shrunk and shriveled up from emma alone. He didn't even have wado and sandai on his body at the time.
Emma and only Emma sucks and puts him in mortal danger from haki drain.
Gaben did not see zoro go all out. All he saw was a glimpse
Think of it this way. If zoro haki is at 100% and he uses emma for a bit. It would be at like 90% or whatever. And he'd still not be at risk of dying. And so the negative effects wouldn't show up. That's true until like 30% or whatever. Then and only then does zoro enter the danger zone of emma sucking. (just an example. not saying that's how it works and those numbers are accurate)
Gaben barely saw zoro use acoc. So he did not get to see the negative effects of prolonged abuse of Emma's sucking. Thus, he thinks zoro can freely use acoc without any side effects. That's why he said that.
But, zoro is getting stronger and getting used to it as well as you said. What i'm saying is, he hasn't necessarily overcame the side effects of Emma suck completely. It should be a slow process.

Mink medicine is magic and was said to restore his health completely. And he had some time between the asura and fighting king. So he most likely regenerated his haki. He was even sleeping between lol.
Unless stated otherwise, zoro was at 100% at the start of king fight due to magic medicine asspull.
zoro is aware that he is killing himself when using emma...
he is just unaware he is using acoc
no
zoro used 3 swords with haki throughout the post timeskip. Never had any problem. Only emma sucks his haki out. He can just spread the sucked out haki to the other swords.
Go back to when he got emma. His arm shrunk and shriveled up from emma alone. He didn't even have wado and sandai on his body at the time.
Emma and only Emma sucks and puts him in mortal danger from haki drain.
Gaben did not see zoro go all out. All he saw was a glimpse
Think of it this way. If zoro haki is at 100% and he uses emma for a bit. It would be at like 90% or whatever. And he'd still not be at risk of dying. And so the negative effects wouldn't show up. That's true until like 30% or whatever. Then and only then does zoro enter the danger zone of emma sucking. (just an example. not saying that's how it works and those numbers are accurate)
Gaben barely saw zoro use acoc. So he did not get to see the negative effects of prolonged abuse of Emma's sucking. Thus, he thinks zoro can freely use acoc without any side effects. That's why he said that.
But, zoro is getting stronger and getting used to it as well as you said. What i'm saying is, he hasn't necessarily overcame the side effects of Emma suck completely. It should be a slow process.

Mink medicine is magic and was said to restore his health completely. And he had some time between the asura and fighting king. So he most likely regenerated his haki. He was even sleeping between lol.
Unless stated otherwise, zoro was at 100% at the start of king fight due to magic medicine asspull.
so Emma, therefore Oden, is sucking zoro?