I feel a bit guilty about that one, actually. If he isn't a troll, then it is poking at what must be a very real tragedy in 1inChrist's life. He was abandoned and has had to praise his mother for an act that hurt him. He has probably justified the cost to himself as a sacrifice in God's name, at least in order to maintain cordial relations with his mother.
If he does accept the injunction as binding, he probably won't see this point as we mean it - "nobody lives in accordance to the bible, not even you. Do you really think your mother deserves an eternity of hell? No, I thought not" - he is more likely to see it in terms of "I have sacrificed everything for God, and it turns out that God spurns the sacrifice my mother made on my behalf."