I read what "they" are trying to say like this:
Hey Lehigh, we know you are not an idiot, but frankly most of the people around you are. But you know that. So, we have to tell them these common sense rules. They technically apply to you, but shit, you were going to do what they say anyway, so in all honesty they don't apply to you. I mean, shit, Lehigh, you know there are people running around thinking we've all already been infected? Seriously. So you see the kind of moron we have to make our signs for.
MAS, I find it odd that you interpret them differently. My sense is you're not a moron. You've got some weird chip on your shoulder that won't let you abandon the Trumpsters, but I can tell they drive you nuts down deep.