Does "moonies" still have negative connotations?

"Well...we're Loonies."

Robert A. Heinlein, The Moon is a Harsh Mistress

In the fullness of time, when there's a permanent habitat on the lunar surface, we'll need to come up with some kind of colloquial term for people who live on the Moon.  Sad that "loonie" is already taken for the Canadian one-dollar coin, although we may be willing to share that under the right circumstances.

- Sid