So yes, you have to make some assumptions. But to me it’s pretty clear that if someone is expressing anger at a possible joke that would be messed up if not a joke, they probably aren’t trolling/joking themselves. And then even if some people were, when you see people doing it en masse, I think it’s a safer assumption to assume no one gets the satire than it is for them to see a single random thing online and then get mad about what they think it means, when there are multiple possible interpretations