Perhaps it is a fail-safe option. Guaranteed to fail or not. LOL
The last thing we need is another Catholic authoritarian on the Court. Not because Catholics are subservient to the Pope in Rome, but because confession and absolution frees them from the need to exercise self-restraint. Behavior can be hit or miss and, if it goes wrong, all can be forgiven by confessing. That is not a reliable basis for moral behavior but it is what makes authoritarianism attractive to the instinct-driven.
An admission. I left off being a Catholic because the church offended my moral sense.