The way I view it is that people are pro-Life or pro-Death...
and that is why the term pro-life is a loaded phrase. Just as Pro-choice is.
But not pro-abortion. That is a straightforward definition of being for abortion.
Just as being pro-immigration or anti-immigration doesn't necessarily attach any moral position to the argument. They may be inaccurate terms (maybe needing pro-illegal immigration or anti-illegal immigration), but they are not saying 'i'm for life, so you must be for death" or "i'm for choice so you must be closed minded."