Isn’t the boy old enough to choose where he wants to be buried when he is ready to push up daisies? This sounds bizarre of the parents too. It isn’t all the boy’s weirdness.
Father: the liberal son of an old Catholic family, he loves the physical plant of the church and the "mystical" connection to his ancestors. Real faith? Maybe, maybe not, but one way or the other he is 100% subject to...
...Mother: a liberal agnostic, she tolerated the "church thing" for her husband's sake. Now that repentance has been required she has expressed her intention to leave and never return rather than submit. I suspect that she'll throw herself into the lake of fire on Judgement Day if doing so means that she can continue believing and acting as she chooses.
Son: a typical teenage youth culture drone. I doubt he cares one way or the other. No church means he gets his Sunday mornings back. AWESOME!