To prevent cluttering the RVR since it seems like there's a more pressing ongoing report atm I'll answer here:
I don't remember this being the case but assuming this is true it's quite a bit different than the edit you made. In the manga there is no visual indicator for when Luffy uses internal destruction besides verbal confirmation and the handcuff scenes, while Zoro using Enma does have a visual indicator shared both in the manga and anime with his swords being covered in aura but of course in the manga Zoro was not shown using it 24/7 with hao throughout the fight which the anime changed.
7.5. I guess, but it's good support and coincides with him not using Haki the first time he broke King's mask.