A book I was reading had this:

There is another important aspect of the Sistine Chapel worth mentioning. Michelangelo’s Last Judgment is located behind the altar, not on the facing wall like all the others. Traditionally, Last Judgments were always painted on the wall opposite the altar, because they served as a warning. After facing the altar during the course of the service, the faithful then turned around to leave and were shown the various penalties awaiting those who violated divine law. In the Sistine Chapel the exact opposite happens: the celebrant and the faithful are forced to stare at the Last Judgment as they say their prayers. I do not know whether it was the chapel’s floor plan that imposed this solution or the artist’s iron will. We could probably easily find out by asking an expert. I never have, because I like to imagine (albeit without any historical basis) that Michelangelo chose this configuration so as to make his work a warning addressed not only to the average churchgoer, but to the cardinals, celebrants, and the pope himself. After all, Rome was very corrupt back then and the Reformation was in full swing. It traumatized Michelangelo, who was a member of the so-called spiritual Franciscans, and the papacy considered the movement’s followers Lutheran sympathizers. That suspicion is almost certainly unfounded, but it is true that this small coterie aimed to encourage a revival of the evangelical spirit as a remedy for the Church’s corruption.

Is the author wrong about this?