Here's something I though of recently: As we all know, Koby uses the -San honorific for basically everyone, but what about Alvida? The one he calked an old hag?
so, while he's still living in fear of alvida, coby actually refers to her with the even more respectful 様/sama honorific, which appears to be standard for her crew (the other alvida pirates do it too).
but i am struggling to remember if he actually ever refers to her by name after shouting her down? which means i can't tell if he adjusts how he refers to her at all following that character development. he does still use his polite verb forms when insulting her, though.