"I will do so independent of both the political branches and my own preferences." Really?

From Amy Coney Barrett's acceptance speech last night:

The confirmation process has made ever-clearer to me one of the fundamental differences between the federal judiciary and the United States Senate, and perhaps the most acute is the role of policy preferences. It is the job of a senator to pursue her policy preferences; in fact, it would be a dereliction of duty to put policy goals aside.

By contrast, it is the job of a judge to resist her policy preferences. It would be a dereliction of duty for her to give in to them. Federal judges don't stand for election, thus they have no basis for claiming that their preferences reflect those of the people. This separation of duty from political preference is what makes the judiciary distinct among the three branches of government. A judge declares independence not only from Congress and the president, but also from the private beliefs that might otherwise move her. The judicial oath captures the essence of the judicial duty; the rule of law must always control...

...The oath that I have solemnly taken tonight means at its core that I will do my job without any fear or favor and that I will do so independent of both the political branches and my own preferences. I love the Constitution and the democratic republic that it establishes, and I will devote myself to preserving it.

via JJ Sefton's Morning Report in the Ace of Spades blog