Wow, I would have thought it was Danny.
Our faith requires no such thing, and a reflective and generally well informed person as Frank is presented to be should have known better.
But it is still plausible. Such people seem to not discuss their root values much and simply act on them without discussion.
I think I have met about 20 Christians in my life that believed that Christian teachings encourage people to exploit moral degeneracy in order to discourage it among those who see it. Sort of like the herd eating its own weakest members in order to encourage the rest to not get sick.
But none of them were well read or given to introspection.
These seems to reveal a surprising tin ear among the writers of the show. I thought they had better Catholic advisers than that.