What utter horsesheet. For as long as I can remember Judicial decisions were characterized by a narrow, one vote margin.
https://www.nationalreview.com/2017/06/unanimous-supreme-court-decisions-are-more-common-you-think/
…But even in a more typical term, approximately 80 percent of votes are in support of the majority opinion, and only about 20 percent of cases are determined narrowly. The 5–4 cases that get national attention are in fact somewhat anomalous…