Simple, Trump and all gop politicians paid lip service to the issue when RvW was the law of the land.
Saying that they were pro-life just rolled off their lips. When challenged they responded with "well it's the law of the land" and moved on.
They really had no idea what SCOTUS was going to do.....Now that SCOTUS ruled they have to defend it.
Trump in particular because he installed the majority that did away with RvW and set the issue back to the states to be hashed-out.
The dems will gin them up (again) and the womenz will come out against him in droves. You got a taste in 2022.....You know, that red wave that never materialized, and if Trump is the nominee then it's Katy bar the door.
Abortion will be a millstone around the neck of the gop till they decide to let the people vote on it one way or the other.....I figure that one issue alone will cost the gop 10% of the vote if not more.