I don't see what the factual status of any of these policies have to do with the topic at hand. They're immaterial to the question of whether the Overton window has shifted right.

From what I gather, you seem to agree that the right has been and continues to argue for the same policies now as they did decades ago, and for basically the same reasons, and therefore, you must agree that they have not shifted the Overton window on those issues. The only issue they arguably expanded slightly rightward was abortion, and only very recently.

On most other issues it seems like the Overton window expanded to the left while the right side has not changed much.