conflict resolution isn't always about taking down the big bad with a hit. In this case the people of wano never recognized their part in creating the monster that was orochi by punishing the entire clan for the crime of a grandparent. they simply learnt absolutely nothing. What others might downplay as just a pun looks more like a justification for their previous actions ( it's quite literally celebrated).
oden's in contrast was never meant to apply to him in reality . oden had made reference to that pun while he was alive (and not boiling lol) . And as he passed on the people of wano repeated what he had said so many times as they grieved. Personally any attempt to conflate the two scenarios as similar just tells me you read that line without any attempt to take context into account.
saddened to see yamato didn't develop a bit through the arc but we don't have to see her anymore so I can't say I care, at this point , just wish the time was spent getting to develop other characters that are more likely to play a bigger role i.e carrot who might actually be the tenth straw hat that we are waiting for but unfortunately got like one offscreen chapter fight with perospero throughout the entirety of wano. all in all, can't say I enjoyed this arc given its conclusion.
will miss kinemon, some of the scabbards ,and ofc the oden wank (hopefully zoro serves as a channel for oda to continue that).