Maybe Republican fear-mongering on judges would have some salience if the Republicans had shown any propensity at all to pick judges who had any decent notion of what the Constitution says and means, and what their oaths require.
After all, Republican-picked judges have controlled the Supreme Court for a whole generation now. Look at what the courts have done in the last half-century, and remember who is responsible for most of it. And that includes Roe vs. Wade, which was decided by a heavily GOP-appointed court.
And this idea that we're only "one judge away from losing our rights" is toxic. To what ever degree there is any truth to it it is solely because virtually the entire Republican Party has surrendered constitutional republican self-government in favor of the setting up of a judicial oligarchy. They show absolutely no interest in providing any necessary check or balance on the courts, as their oaths of office require.
The courts were supposed to be the weakest branch, with no "force or will," as Hamilton put it in the Federalist. They can do absolutely NOTHING that the executive branch, and the legislative branch, and the people, don't allow. NOTHING.
What's it going to take to wake up the people to the fact that the courts have absolutely no legitimate power to violate the laws of nature and nature's God or the Constitution of the United States?