I agree with you on the extremism, but I don't think this fairly represents most of the people on the "pro-life" side of the debate.
First of all, as I point out in the article the "pro-life" position doesn't actually protect life. It's a knee jerk reaction to a personal dislike of abortion that doesn't consider the variety of situations where an abortion is necessary. Or the fact that the data shows abortion bans simply put women's lives at greater risk.
And second, I don't think pro-life people are "forced" into their position. They feel, almost invariably on religious grounds, that life begins at the moment the sperm touches the egg. And they're entitled to that belief. Nobody is forcing them to have abortions. The question is, are they entitled to force other people to live by their belief? And here I think the answer is a resounding no.
As far as the extremism on the pro-choice side, yes, you can find people who argue that abortion should be legal right up until the moment of birth. But these people are obviously lunatics. And, I think, vanishingly rare. They don’t represent the pro-choice side to nearly the degree that the “human life begins at the instant of conception,” crowd represent the pro-life side.
I think the overwhelming majority of pro-choice people are happy to accept reasonable limits on elective abortions. Roe vs Wade provides those limits. But people who oppose Roe seem to simply want a zero-tolerance approach.