There might be some types of fae that have less of an issue with cold iron... smith types.
Which, if he isn't irritated with allergies all the time (though I love that idea, so let's not set it aside), well, a fae oriented toward making things might be quite miffed about someone who keeps breaking things. in his territory. and also demonstrates egregious taste in lightsabers.

anyhow, fae in space, I'm taking a ticket number at the deli counter for a fill or more musings.