Thats a mighty tasteless thing to say. I am guessing you are on the "we should not be exploring space" camp?
I'm very much pro-space exploration, and I thought it was funny. It's just a tongue-in-cheek joking reference as if this was a huge game of lawn-darts.
Lighten up, and stop 'guessing' about what 'camp' people are a part of as part of public discourse. It makes you look rude, presumptive, and (possibly worst of all) wrong.