I don't think it was that rude.

And even if there hasn't been a cure in your world doesn't mean there isn't in another one. With as many doctors and scientists and mages as we have on the ship, there's bound to be a way!

I don't think your explanation is as strange as some of the other people I've met on the ship - or even some of the things I've seen back home. So there isn't anything to worry about, really.