You're right: laws change. People's viewpoints on important issues change.
Slavery was legal, until it wasn't anymore. Women's rights have made tremendous advances over the past 100-200 years. And in another 100-200 years, people will look back and no doubt view certain things we did as barbaric. Will abortion be one of those things? Who knows.
What we do know that the consensus viewpoint among Americans that abortion is not murder has been strikingly consistent for the past 45 years, despite the tremendous amount of debate on this subject.
You currently have a 5-justice conservative Supreme Court majority. However, they collectively do not believe abortion is murder, because Roe v. Wade remains good law. I actually don't think a *single* conservative Supreme Court justice would agree with the statement that abortion is murder.
Clarence Thomas is generally regarded as the most conservative Supreme Court justice. So, I looked into Clarence Thomas's views on this. In a 2019 opinion joined by no other justice, he opined against "eugenic" abortions. See: https://www.latimes.com/opinion/enterthefray/la-ol-clarence-thomas-abortion-20190531-story.html
https://www.supremecourt.gov/opinions/18pdf/18-483_3d9g.pdf
Despite these interesting and offbeat anti-abortion thoughts, Thomas's opinion stopped far, far short of calling abortion murder.
The GOP talks a big game on it, and they will continue to restrict abortion here and there, but they will never move to outright ban it so long as American viewpoints on this stay consistent. It would provoke too large a backlash.
However, by fomenting this belief that abortion is murder and that millions of "babies" are being murdered every year, they have made a lot of conservative Americans very malleable and willing to excuse all sorts of other misconduct by the GOP and/or Trump in the name of "a greater good." Which works out just great for them.
I'm running out of space and time for now, but I'll end with this thought: Being born is important. You can't just wave that way. Those who want to ban abortion love to talk endlessly about fetal development at age 4 weeks or whatever but completely skip over the wrenching and critical process of birth.