It's lighthearted to make jokes about religion.
"Jack kept telling jokes like ""what did God say when he stubbed his toe? Me damnit!""."
Jack wants to make people laugh.
Jack keeps telling his religion jokes as long as they are lighthearted.
Jack stops telling the jokes and starts telling video game jokes instead.
People keep laughing at the jokes ad Jack is seen as very funny.
Only gamers get the jokes, as opposed to anyone who's ever heard of religion.