Leftists: How is abortion a woman's rights issue...

So this is how the argument goes if one of the resident lefties would have the courage to respond:

Lefty: Abortion is a woman's rights issue!
Me: Are you a biologist?
Lefty: .....
Me: if abortions is a "woman's" rights issue, then define what a woman is.
Lefty: A woman isn't about what you are born with, but how you feel.
Me: What if i feel abortion is infanticide?
Lefty: No one cares what some man thinks about abortion.
Me: But you just said a woman isn't based on biology but feelings.
Lefty:

Amazing thing about snakes is that they reproduce spontaneously. They have both male and female sex organs. That’s why somebody you don’t trust, you call a snake. How can you trust a guy who can literally go frick themselves?