If it is limited to the individual states, then the evil is contained (i.e. merely tolerated) in those Marxist "sanctuary states" while the rest of the nation bans and penalizes it outright.
But it's not merely tolerating abortion in some states. It is actively laying out the principle that the states have the right to keep abortion legal and that the federal government can not stop them. That is incredibly dangerous and does more harm than good.
ALREADY before this ruling, the states were allowed to pass anti-abortion legislation (Texas and others) that effectively outlawed abortion. So then what does this ruling do on top of that? Nothing, even from a practical perspective. Really the only thing it accomplishes is to enshrine the principle that states can legalize abortion all they want.
It's an unmitigated disaster for the Pro Life movement. This absolutely undercuts Pro Life going forward, the the Pro Lifers are being duped into thinking this is a great victory. These evil Satanists are quite clever.
It is the textbook double-edged sword, and the Pro Life movement is going to be hacked up by the back edge of this thing. Mark my words. Before when states were methodically going one by one to outlaw abortion, they had the single-edged sword working for them as they were constantly cutting away in the direction of curtailing abortion. Now the SCOTUS is making the sword double-edged so that the Satanic Leftist states will use the other edge of the sword to promote abortion even more. Before there was hope that over time enough states could make abortion illegal to be able to pressure there to be federal laws against it. But this SCOTUS ruling absolutely torpedos that.