The vote to overturn Roe was 5-4 not 6-3

[FBaggins]

10. Yes and no

If Roberts' opinion were read on its own... many would interpret it as overturning Roe.

voted simply to uphold the Miss. ban on abortions after 15 weeks

Which could not occur under Roe/Casey.

I agree with the Court that the viability line established by Roe and Casey should be discarded under a straightforward stare decisis analysis. That line never made any sense.

...snip...

Let me begin with my agreement with the Court, on the only question we need decide here: whether to retain the
rule from Roe and Casey that a woman’s right to terminate her pregnancy extends up to the point that the fetus is regarded as “viable” outside the womb. I agree that this rule should be discarded.

First, this Court seriously erred in Roe...