If you’re referring to late term abortions, which are only done due to medical necessity, I’m not so sure.
Yes, abortion on demand is a rather popular slogan, but it’s usually more of a direct reaction to the debate, rather than a tenable position someone will actually try to defend on a platform.
(Of course, I’m speaking generally. Maybe there are extreme examples. Like anarchist feminists perhaps.)
Whereas the other “extreme” actually is a legit talking point that is defended by some on the pro life side. Like as a position, not just a reaction.
Though I take your point.
Compromise is difficult with extremes, regardless of issue or indeed the side chosen