RBG thought that Roe v Wade won for the wrong reasons, but didn't want to repeal it because of the damage she knew it would cause – she wanted to roll-forward rather than roll-back.
This court, or at least the conservative majority, are very much in favour of rolling-back, and I suspect are only vaguely in favour of letting the legislature pass laws because they know that there will be challenges to those laws that they can then get involved in, meanwhile they have shifted the overton window of women's rights.
https://www.newsweek.com/ruth-bader-ginsburg-roe-wade-aborti...
https://www.law.uchicago.edu/news/justice-ruth-bader-ginsbur...
https://www.washingtonpost.com/history/2022/05/06/ruth-bader...
Seems to me RGB did feel that ruling was weak and should have decided based on equal protections not privacy.
And they didn't rule against it because of the privacy angle. They ruled against it because they are trying to destroy the jurisprudence of substantive due process and unenumerated rights, because it serves their reactionary politics.