This reminds me of a little kid who is told he can't have cookies before dinner, but then when offered dessert afterwards, will sit pouting in his chair saying, "No! Mommy said I can't have cookies so that means I can't have cookies EVER because she's the meanest mom ever!" i.e., taking a rule that only mildly inconveniences you and then willfully interpreting it beyond its stated scope to do the most damage to yourself as possible to show how horrible and terrible these rules are.
Government forbids school-sanctioned prayer? Well, we'd better tell our children they're not allowed to pray EVER, and that it's the government forcefully forbidding it. In fact, they're forcefully forbidding it so much, that they're going to come tie you up and take you away in vans if they ever catch you praying, so we'd better prepare you for that!
Gleefully setting themselves on fire to burn their own strawmen.