I understand your point. However this is something than can be interpreted in a thousand ways to make it seem like every Nakama refused the call or also be argued that they didn’t. Basically I could say that Yamato had the refusal when she stayed in Wano and next they meet she can join.
And yes, in a Yamato refused to join, like Vivi. but what is important in their case, is that it was at the end of their arc of character. What you see as a refusal of a call in their case is in fact another storytelling plotpoint/concept that is the "choice in front of a dilema".
This is different as the choice in front of a dillema (it doesn't really have a strong name, you can just call that "the choice" of the protagonist.) always happens at the END of the story of said protagonist. Its usually a choice that the protagonist will face either on screen or offscreen (usually on) that will make the protagonist choose between two positive or two negative option.
For Yamato it was:
- Staying in Wano and losing adventure
Or
- Going with the strawhat and letting Wano alone
For Vivi it was
- Staying with the crew and leaving Alabasta
Or
- Staying with her country and helping them rebuild
The choice in storytelling is a plotpoint that not only adds huge conflict (its the high point of the story of the character) but also show to the audience the advice of the author on how to live life in a specific situation. In both cases here (very similar) Oda is saying: "When you have power and a responsibility, don't fly away."