This paragraph exposes your apparent lack of knowledge about how lawmaking works. Wouldn't whomever is president have to either sign, or not sign, a national abortion ban or a law codifying Roe? Isn't whomever is president allowed to advocate to the legislators to pass a bill that would do either thing? Thus, the president CAN do something about it, yes? If it were true that "the Dobbs decision has made it a states rights issue. Period," wouldn't that mean that any of the folks running for any national office saying that they DO support a national abortion ban--or previously said they supported it, before having to run away from it given how unpopular it is--are also lying to the voters because that's not a thing they can do anymore?
SCOTUS saying "the constitution doesn't guarantee this right" doesn't mean that it can never be a national thing ever again. If that were true, then there would be no need for a congress at all, because everything that isn't already in the constitution would be a "states rights" issue, and thus, not subject to national laws, so there would be no need for a national congress to pass laws.