Let's make this argument a bit clearer. If women are allowed to shoplift from stores, should men be allowed to also? No, of course not.
this doesn't change anything. you equate abortion with shoplifting, Greyfeld wouldn't. it's not "two wrongs make a right" from his perspective, it's "one side is fine but the other is getting screwed." if you don't think abortion is wrong you're not likely to respond to a shoplifting example.