Perhaps a sarcasm tag would have been a good idea. It would have prevented this confusion.
Here's a hypothetical example of how sarcasm tags work:
'I hope no churches get burned down over this. /sarcasm'
Of course, my use of the tag here is incorrect because I truly do hope no churches get burned down over this. You see how they can clarify the meaning of a statement though.
I see where you're coming from. I tend to misunderestimate the capacity for folks to take absurd propositions and treat them seriously. If someone cannot recognize the sarcasm in those posts without the presence of an /s tag, my confidence in human communication will be minorly diminished in a major way.