He stopped holding back his haki? I thought we knew this.
so...
Do you think other coc users who don't have acoc, are not trying their hardest in their fights?
Did goofy hold back against doffy kata kaido etc?
Did doffy and kata hold back?
Why did none of them get acoc?
why did zoro not get acoc in the past when he was struggling hard against enemies?
Zoro did not get acoc purely because he stopped holding back lol. If so, he would have gotten it against mohawk mr 1 kaku kuma kizaru etc.
Zoro got acoc because he stopped holding his haki back from Emma specifically. Emma is the conduit that allows zoro to use his untapped coc reserved and turn it into acoc.