Republican presidents are "pro-life" only during election season. They know that they can't win this battle or don't want to fight it.
But Trump is a fraud, so not exactly surprising. He was never pro-life, he just needed the votes of pro-lifers (and if it weren't for them, he wouldn't be in the White House right now).
This is a myth. Trump appointed Gorsuch and that's all they care about, would be more accurate. The PP was always just a side battle that came about due to James O'Keefe ratf__ing operation against ACORN in September 2009 (remember ACORN was to blame for getting Obama elected; in their minds it was real). That was so successful, they decided to go after PP next. They weren't so successful with videos, but they did manage to make funding of PP a national issue. But the whole thing has always been secondary to pro-lifers behind SCOTUS.