Is it okay to discriminate against people who would not personally choose abortion, whatever the given circumstance (e.g. lack of financial resources, unstable partnership, age/maturity)? No, certainly not - you do you, girl!

 Is it okay to oppose someone whose angenda supports taking that right of choice away from other women? Particularly if that someone has been nominated as the Chair of a group that is supposed to represent women and their fundamental rights?

Um, yes. Obviously it is okay to oppose (author's word: discriminate) that person.