I grew up in the Adventist church. I am still a Christian (although no longer Adventist). While I don’t agree with it at all, it is actually true that there are some weird pockets within the denomination that either overtly or tacitly approve abortion. It’s very bizarre.
Not just tacitly approved, the church has run hospitals that have performed a lot of them[1].
> Early Adventism published positions in harmony with the Physicians' Crusade Against Abortion, though it was not active in that movement. The church produced its first set of abortion guidelines in 1970, when American attitudes toward abortion had changed and some of the church's hospitals were experiencing in creasing pressure from their communities to provide abortion services.
> Less than a year after the first set of abortion guidelines was developed, the church revised and expanded it. The resulting liberalized guidelines have allowed Adventist hospitals a great deal of freedom in their abortion practices, a freedom that has resulted in a large number of abortions being performed. Although the church has been hesitant to let it be known, at the present it is clearly not, in either policy or practice, limiting its medical institutions to therapeutic abortions.
^ From 1991.
I think the church, historically, has been so conservative that they are unwilling to contort the scripture to get it to support their political ambitions to the same extent other churches are (although lately that's not so true). This is similar to how the Southern Baptists initially supported and ran an op-ed praising the Roe v Wade ruling[2].