I had a sandwich shop, and the city put up a wall blocking access to the driveway from the main road. They put a pamphlet in my mailbox that said, "Pure Shit," which instructed me to stop doing things like grinding up cats, posting obnoxious fliers on everyone's car windows, and stealing tomatoes out of people's yards.
There was a little box I could write in and mail back to request they restore access from the road. I made sure the shop wasn't doing any of those things, I cleaned it up a bit, and spoke with the Mayor. He said he didn't know why people would want to eat sandwiches, and my shop sucked. My form was mailed back with a "Denied" stamp and the same generic paper about how my shop is "Pure Shit."
"You're idiots." is a reasonable response of someone forced into a situation where their words have no effect, and nobody appears to be reading them. Why waste effort reasoning to those who refuse to listen or acknowledge what you say? Nobody said, "Your tomatoes are tainted because your supplier is a known fraudster." It just said, "Pure Shit."