I just do not think it is a big deal if Roe gets overturned. All that means is that a federal prohibition against anti-abortion laws will be lifted and the authorization of abortion will once again be a State responsibility.
Sure, some retrogressive States like South Dakota will prohibit abortion (Utah too, probably), but the overwhelming majority will still allow choice.
After all, prior to Roe making the point moot, several States had already lifted their abortion bans, and more were in the pipeline.
And if the people in South Dakota have second thoughts, they can make it an issue at the ballot box.