I personally don't mind banter. I joke about myself heaps whenever I play Bard or Astro (Someone call for a useless healer? Here I am <3). People just need to be aware that there's a time and place for these things. Sometimes it's not going to be appropriate to joke about these things because some people might take it seriously or just not be in the mood for it.

It's not really that difficult to understand this and to have some empathy for the people you're playing with.