Back then, most people didn’t consider it an urgent issue because most people considered it settled law and didn’t really believe it would be overturned. Most people didn’t really consider that the Supreme Court would be compromised to the degree it has.
That perception has changed dramatically, and it’s proven to be a winning issue for Dems. As the next voting cycle ramps up, it will likely be a big campaign point. In order to have any chance at all, though, Dems must gain a solid majority in Congress.