No dude , that could simply be shadows , when Luffy or Zoro used hardening oda made a big fucking deal about it. No panels No hardening for lanji
The Daifuku one
could have been shadows. That was debatable, but
you can't say it wasn't for sure, from the manga alone.
The anime expanded the small panel into a large animated sequence and confirmed that
specific ambiguous instance was CoA (without having Sanji using CoA arbitrarily in other scenes).
The Drake one can't reasonably be shadows by any metric, in the manga or the specific expanded scene in the anime, you are acting in very bad faith around this point.
Given the preponderance of the evidence I think it should be clear to any non-shithead that Sanji can use CoA hardening.
CoA was a big deal back in Punk Hazard/Fishman Island. Not so much by the time of WCI, hence lack of emphasis, especially considering Oda can't usually even draw it on Sanji due to his black leg design. Hyping it up here, when he most likely used it before without it being visible wouldn't make any sense.