While there is probably no room for agreement with someone who thinks “abortions are always immoral”, this does not mean their position is wrong somehow. What do you mean “we know this because we value human life”? I would say opposition to abortion is motivated by an appreciation for human life, even before birth we are valued.

A situation when a woman’s life is contingent on doing an abortion is a rare edge case, and I would say you should always save the mother then, but if they want to try to make sure the child survives as well in most cases where it is feasible, I can respect that since I see their rationale.

I would say, that the church while there were issues in which the church opposed some ideas that are now considered scientific consensus, most notably evolution and heliocentrism, I would say that it is not accurate to say it is opposed or has ever been opposed to science, nor that it opposes scientific thinking. This is like saying Marxists are opposed to science(which they famously love) because they opposed the theory of relativity in the soviet union.

You are saying they are wrong that it is immoral, but what gives you the right to say what is and what is not moral like you are some kind of prophet? The point is, if you accept their moral views, which are quite reasonable, and in case of their view on abortion not exclusively christian, their actions are perfectly rational most of the time in that regard, this has nothing to do with the denial of science.