Except it's not.
Yonkou Luffy, and Post King fight Zoro could not nick the flame on Lunarians, Zoro never damaged a flame on lunarian. One scene where he felt threatened by Zoro doesn't suddenly mean it's a known way all a sudden, with a lot of evidence that may point in the other direction.
This is all besides the point. Lucci could not scratch Seraphim is a terrible argument period. Luffy and Zoro were right there with him, and they performed the exact same. There's nothing to discuss after that.
If you're gonna say they held back on screen, then Lucci also held back on screen as he wasn't awakened. See how quickly Zoro busted out his KoH or atleast green flames, it means he knows it can work here. Or atleast he knows Lucci requires it. Same goes for Lucci, he's already awakened. He was not awakened against Seraphim on screen.
This is one of the worst most easily refutable arguments I've ever seen, and you of all people keep parroting it. I expect that from a troll.