I simply don't see how dead unborn babies have anything to do with J.J.'s Star Trek films, or how it makes any sort of logical sense calling it that as a way to insult it.
Might as well call it any other number of totally nonsensical things that carry unpleasant connotations. Like Genocide Trek. Or Rape Victim Trek. Or Dead Puppy Trek. Triple Bypass Surgery Trek. Double Mastectomy Trek. Bellybutton Rash Trek. Dying of Cancer Trek.